From 1e554737ac3fda9ecf16c4a2818598b6032d7390 Mon Sep 17 00:00:00 2001 From: omagdy7 Date: Tue, 26 Sep 2023 14:32:40 +0300 Subject: Solved A and B in the last Div2 --- codeforces/TheWayToHome/] | 166 ++++++++++++++++++++++++++++++ codeforces/TheWayToHome/main.cpp | 167 +++++++++++++++++++++++++++++++ codeforces/TheWayToHome/main_input0.txt | 2 + codeforces/TheWayToHome/main_input1.txt | 2 + codeforces/TheWayToHome/main_input2.txt | 2 + codeforces/TheWayToHome/main_input3.txt | 2 + codeforces/TheWayToHome/main_input4.txt | 2 + codeforces/TheWayToHome/main_output0.txt | 1 + codeforces/TheWayToHome/main_output1.txt | 1 + codeforces/TheWayToHome/main_output2.txt | 1 + codeforces/TheWayToHome/main_output3.txt | 1 + codeforces/TheWayToHome/main_output4.txt | 1 + 12 files changed, 348 insertions(+) create mode 100644 codeforces/TheWayToHome/] create mode 100755 codeforces/TheWayToHome/main.cpp create mode 100644 codeforces/TheWayToHome/main_input0.txt create mode 100644 codeforces/TheWayToHome/main_input1.txt create mode 100644 codeforces/TheWayToHome/main_input2.txt create mode 100644 codeforces/TheWayToHome/main_input3.txt create mode 100644 codeforces/TheWayToHome/main_input4.txt create mode 100644 codeforces/TheWayToHome/main_output0.txt create mode 100644 codeforces/TheWayToHome/main_output1.txt create mode 100644 codeforces/TheWayToHome/main_output2.txt create mode 100644 codeforces/TheWayToHome/main_output3.txt create mode 100644 codeforces/TheWayToHome/main_output4.txt (limited to 'codeforces/TheWayToHome') diff --git a/codeforces/TheWayToHome/] b/codeforces/TheWayToHome/] new file mode 100644 index 0000000..dbdfb72 --- /dev/null +++ b/codeforces/TheWayToHome/] @@ -0,0 +1,166 @@ +#include +using namespace std; + +using ll = long long; +using pii = pair; +using vpi = vector; +using vi = vector; +using vll = vector; +using mpii = map; +using mpll = map; +using db = long double; + +#define pb push_back +#define all(x) (x).begin(), (x).end() +#define rall(x) (x).rbegin(), (x).rend() +#define lb lower_bound +#define ub upper_bound +#define make_unique(x) \ + sort(all((x))); \ + (x).resize(unique(all((x))) - (x).begin()) +#define ceil(a, b) ((a) + (b)-1) / (b) + +const int MOD = (int)1e9 + 7; +const db PI = acos((db)-1); +const int dx[4]{1, 0, -1, 0}; +const int dy[4]{0, 1, 0, -1}; + +template +ostream &operator<<(ostream &os, const pair &p); +template ostream &operator<<(ostream &os, const vector &vec); +template +ostream &operator<<(ostream &os, const map &m); +template +ostream &operator<<(ostream &os, const unordered_map &m); +template ostream &operator<<(ostream &os, const set &s); +template +ostream &operator<<(ostream &os, const unordered_set &s); + +template +ostream &operator<<(ostream &os, const pair &p) { + os << "(" << p.first << ", " << p.second << ")"; + return os; +} + +template ostream &operator<<(ostream &os, const vector &vec) { + os << "{"; + for (size_t i = 0; i < vec.size(); ++i) { + if (i > 0) + os << ", "; + os << vec[i]; + } + os << "}"; + return os; +} + +template +ostream &operator<<(ostream &os, const map &m) { + os << "{"; + for (const auto &p : m) { + os << p.first << ": " << p.second << ", "; + } + os << "}"; + return os; +} + +template +ostream &operator<<(ostream &os, const unordered_map &m) { + os << "{"; + for (const auto &p : m) { + os << p.first << ": " << p.second << ", "; + } + os << "}"; + return os; +} + +template ostream &operator<<(ostream &os, const set &s) { + int i = 0; + os << "{"; + for (const auto &e : s) { + if (i > 0) + os << ", "; + os << e; + i++; + } + os << "}"; + return os; +} + +template +ostream &operator<<(ostream &os, const unordered_set &s) { + int i = 0; + os << "{"; + for (const auto &e : s) { + if (i > 0) + os << ", "; + os << e; + i++; + } + os << "}"; + return os; +} + +void dbg() { cerr << "\n"; } + +template void dbg(T val, TS... vals) { + cerr << val << " "; + dbg(vals...); +} + +/* stuff you should look for: + --------------------------- + * special cases (n=1?) + * int overflow, array bounds + * do smth instead of nothing and stay organized + * WRITE STUFF DOWN + * DON'T GET STUCK ON ONE APPROACH + */ + +void solve() { + int n, k; + cin >> n >> k; + string s; + cin >> s; + int cur = 0; + int ans = 0; + if (k == 1) { + for (int i = 0; i < n; i++) { + while (s[i] == 1) { + ans++; + i++; + } + if (ans == n - 1) { + cout << ans << '\n'; + } else { + cout << -1 << '\n'; + } + return; + } + } + while (true) { + int tmp = cur + 1; + bool ok = false; + for (int j = tmp + 1; j < min(n, tmp + k); j++) { + dbg(j); + if (s[j] == '1') { + ok = true; + cur = j; + } + } + if (!ok) { + cout << -1; + return; + } + ans++; + if (cur + 1 == n) { + break; + } + } + cout << ans << '\n'; +} + +int main() { + ios_base::sync_with_stdio(false); + cin.tie(NULL); + solve(); +} diff --git a/codeforces/TheWayToHome/main.cpp b/codeforces/TheWayToHome/main.cpp new file mode 100755 index 0000000..7a01e31 --- /dev/null +++ b/codeforces/TheWayToHome/main.cpp @@ -0,0 +1,167 @@ +#include +using namespace std; + +using ll = long long; +using pii = pair; +using vpi = vector; +using vi = vector; +using vll = vector; +using mpii = map; +using mpll = map; +using db = long double; + +#define pb push_back +#define all(x) (x).begin(), (x).end() +#define rall(x) (x).rbegin(), (x).rend() +#define lb lower_bound +#define ub upper_bound +#define make_unique(x) \ + sort(all((x))); \ + (x).resize(unique(all((x))) - (x).begin()) +#define ceil(a, b) ((a) + (b)-1) / (b) + +const int MOD = (int)1e9 + 7; +const db PI = acos((db)-1); +const int dx[4]{1, 0, -1, 0}; +const int dy[4]{0, 1, 0, -1}; + +template +ostream &operator<<(ostream &os, const pair &p); +template ostream &operator<<(ostream &os, const vector &vec); +template +ostream &operator<<(ostream &os, const map &m); +template +ostream &operator<<(ostream &os, const unordered_map &m); +template ostream &operator<<(ostream &os, const set &s); +template +ostream &operator<<(ostream &os, const unordered_set &s); + +template +ostream &operator<<(ostream &os, const pair &p) { + os << "(" << p.first << ", " << p.second << ")"; + return os; +} + +template ostream &operator<<(ostream &os, const vector &vec) { + os << "{"; + for (size_t i = 0; i < vec.size(); ++i) { + if (i > 0) + os << ", "; + os << vec[i]; + } + os << "}"; + return os; +} + +template +ostream &operator<<(ostream &os, const map &m) { + os << "{"; + for (const auto &p : m) { + os << p.first << ": " << p.second << ", "; + } + os << "}"; + return os; +} + +template +ostream &operator<<(ostream &os, const unordered_map &m) { + os << "{"; + for (const auto &p : m) { + os << p.first << ": " << p.second << ", "; + } + os << "}"; + return os; +} + +template ostream &operator<<(ostream &os, const set &s) { + int i = 0; + os << "{"; + for (const auto &e : s) { + if (i > 0) + os << ", "; + os << e; + i++; + } + os << "}"; + return os; +} + +template +ostream &operator<<(ostream &os, const unordered_set &s) { + int i = 0; + os << "{"; + for (const auto &e : s) { + if (i > 0) + os << ", "; + os << e; + i++; + } + os << "}"; + return os; +} + +void dbg() { cerr << "\n"; } + +template void dbg(T val, TS... vals) { + cerr << val << " "; + dbg(vals...); +} + +/* stuff you should look for: + --------------------------- + * special cases (n=1?) + * int overflow, array bounds + * do smth instead of nothing and stay organized + * WRITE STUFF DOWN + * DON'T GET STUCK ON ONE APPROACH + */ + +void solve() { + int n, k; + cin >> n >> k; + string s; + cin >> s; + int cur = 0; + int ans = 0; + if (k == 1) { + for (int i = 0; i < n; i++) { + while (s[i] == '1') { + ans++; + i++; + } + dbg(ans); + if (ans == n) { + cout << ans - 1 << '\n'; + } else { + cout << -1 << '\n'; + } + return; + } + } + while (true) { + int tmp = cur + 1; + bool ok = false; + for (int j = tmp + 1; j < min(n, tmp + k); j++) { + dbg(j); + if (s[j] == '1') { + ok = true; + cur = j; + } + } + if (!ok) { + cout << -1; + return; + } + ans++; + if (cur + 1 == n) { + break; + } + } + cout << ans << '\n'; +} + +int main() { + ios_base::sync_with_stdio(false); + cin.tie(NULL); + solve(); +} diff --git a/codeforces/TheWayToHome/main_input0.txt b/codeforces/TheWayToHome/main_input0.txt new file mode 100644 index 0000000..62e1672 --- /dev/null +++ b/codeforces/TheWayToHome/main_input0.txt @@ -0,0 +1,2 @@ +8 4 +10010101 diff --git a/codeforces/TheWayToHome/main_input1.txt b/codeforces/TheWayToHome/main_input1.txt new file mode 100644 index 0000000..0d15152 --- /dev/null +++ b/codeforces/TheWayToHome/main_input1.txt @@ -0,0 +1,2 @@ +4 2 +1001 diff --git a/codeforces/TheWayToHome/main_input2.txt b/codeforces/TheWayToHome/main_input2.txt new file mode 100644 index 0000000..7119b16 --- /dev/null +++ b/codeforces/TheWayToHome/main_input2.txt @@ -0,0 +1,2 @@ +8 4 +11100101 diff --git a/codeforces/TheWayToHome/main_input3.txt b/codeforces/TheWayToHome/main_input3.txt new file mode 100644 index 0000000..1be6871 --- /dev/null +++ b/codeforces/TheWayToHome/main_input3.txt @@ -0,0 +1,2 @@ +12 3 +101111100101 diff --git a/codeforces/TheWayToHome/main_input4.txt b/codeforces/TheWayToHome/main_input4.txt new file mode 100644 index 0000000..e9f7130 --- /dev/null +++ b/codeforces/TheWayToHome/main_input4.txt @@ -0,0 +1,2 @@ +100 1 +1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111 \ No newline at end of file diff --git a/codeforces/TheWayToHome/main_output0.txt b/codeforces/TheWayToHome/main_output0.txt new file mode 100644 index 0000000..0cfbf08 --- /dev/null +++ b/codeforces/TheWayToHome/main_output0.txt @@ -0,0 +1 @@ +2 diff --git a/codeforces/TheWayToHome/main_output1.txt b/codeforces/TheWayToHome/main_output1.txt new file mode 100644 index 0000000..3a2e3f4 --- /dev/null +++ b/codeforces/TheWayToHome/main_output1.txt @@ -0,0 +1 @@ +-1 diff --git a/codeforces/TheWayToHome/main_output2.txt b/codeforces/TheWayToHome/main_output2.txt new file mode 100644 index 0000000..00750ed --- /dev/null +++ b/codeforces/TheWayToHome/main_output2.txt @@ -0,0 +1 @@ +3 diff --git a/codeforces/TheWayToHome/main_output3.txt b/codeforces/TheWayToHome/main_output3.txt new file mode 100644 index 0000000..b8626c4 --- /dev/null +++ b/codeforces/TheWayToHome/main_output3.txt @@ -0,0 +1 @@ +4 diff --git a/codeforces/TheWayToHome/main_output4.txt b/codeforces/TheWayToHome/main_output4.txt new file mode 100644 index 0000000..d97edbb --- /dev/null +++ b/codeforces/TheWayToHome/main_output4.txt @@ -0,0 +1 @@ +99 \ No newline at end of file -- cgit v1.2.3