From c1bbcb6c2a6d02a4ac06d3c41afcfc51993ec1d3 Mon Sep 17 00:00:00 2001 From: omagdy7 Date: Thu, 14 Mar 2024 00:22:45 +0200 Subject: Solved 3 problems in the last Div3 --- contests/Round933/B/main.cpp | 80 ++++++++++++++++++++++++++++++++++++ contests/Round933/B/main_input0.txt | 15 +++++++ contests/Round933/B/main_input1.txt | 3 ++ contests/Round933/B/main_input2.txt | 3 ++ contests/Round933/B/main_input3.txt | 3 ++ contests/Round933/B/main_input4.txt | 3 ++ contests/Round933/B/main_input5.txt | 3 ++ contests/Round933/B/main_input6.txt | 3 ++ contests/Round933/B/main_input7.txt | 3 ++ contests/Round933/B/main_output0.txt | 7 ++++ contests/Round933/B/main_output1.txt | 1 + contests/Round933/B/main_output2.txt | 1 + contests/Round933/B/main_output3.txt | 1 + contests/Round933/B/main_output4.txt | 1 + contests/Round933/B/main_output5.txt | 1 + contests/Round933/B/main_output6.txt | 1 + contests/Round933/B/main_output7.txt | 1 + 17 files changed, 130 insertions(+) create mode 100755 contests/Round933/B/main.cpp create mode 100644 contests/Round933/B/main_input0.txt create mode 100644 contests/Round933/B/main_input1.txt create mode 100644 contests/Round933/B/main_input2.txt create mode 100644 contests/Round933/B/main_input3.txt create mode 100644 contests/Round933/B/main_input4.txt create mode 100644 contests/Round933/B/main_input5.txt create mode 100644 contests/Round933/B/main_input6.txt create mode 100644 contests/Round933/B/main_input7.txt create mode 100644 contests/Round933/B/main_output0.txt create mode 100644 contests/Round933/B/main_output1.txt create mode 100644 contests/Round933/B/main_output2.txt create mode 100644 contests/Round933/B/main_output3.txt create mode 100644 contests/Round933/B/main_output4.txt create mode 100644 contests/Round933/B/main_output5.txt create mode 100644 contests/Round933/B/main_output6.txt create mode 100644 contests/Round933/B/main_output7.txt (limited to 'contests/Round933/B') diff --git a/contests/Round933/B/main.cpp b/contests/Round933/B/main.cpp new file mode 100755 index 0000000..eae9018 --- /dev/null +++ b/contests/Round933/B/main.cpp @@ -0,0 +1,80 @@ +#include + +using namespace std; + +using ll = long long; +using pii = pair; +using vpii = 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}; + +#ifdef LOCAL +#include "debug.h" +#else +#define dbg(...) 42 +#endif + +/* 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 apply(vi &v, int idx, int times) { + v[idx] -= 2 * times; + v[idx - 1] -= times; + v[idx + 1] -= times; +} + +void solve() { + int n; + cin >> n; + vi v(n); + for (auto &x : v) { + cin >> x; + } + for (int i = 0; i < n - 2; i++) { + int times = v[i]; + if (times < 0) { + cout << "NO\n"; + return; + } + apply(v, i + 1, times); + } + if (all_of(all(v), [](int x) { return x == 0; })) { + cout << "YES\n"; + } else { + cout << "NO\n"; + } +} + +int main() { + ios_base::sync_with_stdio(false); + cin.tie(NULL); + int tt; + cin >> tt; + while (tt--) { + solve(); + } +} diff --git a/contests/Round933/B/main_input0.txt b/contests/Round933/B/main_input0.txt new file mode 100644 index 0000000..315e8f5 --- /dev/null +++ b/contests/Round933/B/main_input0.txt @@ -0,0 +1,15 @@ +7 +5 +1 3 5 5 2 +5 +2 4 4 5 1 +5 +0 1 3 3 1 +6 +5 6 0 2 3 0 +4 +1 2 7 2 +3 +7 1 0 +4 +1 1 1 1 diff --git a/contests/Round933/B/main_input1.txt b/contests/Round933/B/main_input1.txt new file mode 100644 index 0000000..f8f351a --- /dev/null +++ b/contests/Round933/B/main_input1.txt @@ -0,0 +1,3 @@ +1 +5 +0 0 0 0 0 \ No newline at end of file diff --git a/contests/Round933/B/main_input2.txt b/contests/Round933/B/main_input2.txt new file mode 100644 index 0000000..f8f351a --- /dev/null +++ b/contests/Round933/B/main_input2.txt @@ -0,0 +1,3 @@ +1 +5 +0 0 0 0 0 \ No newline at end of file diff --git a/contests/Round933/B/main_input3.txt b/contests/Round933/B/main_input3.txt new file mode 100644 index 0000000..2343d1c --- /dev/null +++ b/contests/Round933/B/main_input3.txt @@ -0,0 +1,3 @@ +1 +5 +0 1 2 1 0 \ No newline at end of file diff --git a/contests/Round933/B/main_input4.txt b/contests/Round933/B/main_input4.txt new file mode 100644 index 0000000..08c4b02 --- /dev/null +++ b/contests/Round933/B/main_input4.txt @@ -0,0 +1,3 @@ +1 +7 +0 0 1 2 1 0 0 \ No newline at end of file diff --git a/contests/Round933/B/main_input5.txt b/contests/Round933/B/main_input5.txt new file mode 100644 index 0000000..a12c920 --- /dev/null +++ b/contests/Round933/B/main_input5.txt @@ -0,0 +1,3 @@ +1 +6 +0 0 1 2 1 0 \ No newline at end of file diff --git a/contests/Round933/B/main_input6.txt b/contests/Round933/B/main_input6.txt new file mode 100644 index 0000000..c5c8724 --- /dev/null +++ b/contests/Round933/B/main_input6.txt @@ -0,0 +1,3 @@ +1 +5 +0 2 4 2 0 \ No newline at end of file diff --git a/contests/Round933/B/main_input7.txt b/contests/Round933/B/main_input7.txt new file mode 100644 index 0000000..fa13f69 --- /dev/null +++ b/contests/Round933/B/main_input7.txt @@ -0,0 +1,3 @@ +1 +5 +0 3 4 2 0 \ No newline at end of file diff --git a/contests/Round933/B/main_output0.txt b/contests/Round933/B/main_output0.txt new file mode 100644 index 0000000..c5bec53 --- /dev/null +++ b/contests/Round933/B/main_output0.txt @@ -0,0 +1,7 @@ +YES +NO +YES +NO +NO +NO +NO diff --git a/contests/Round933/B/main_output1.txt b/contests/Round933/B/main_output1.txt new file mode 100644 index 0000000..d2bb323 --- /dev/null +++ b/contests/Round933/B/main_output1.txt @@ -0,0 +1 @@ +YES \ No newline at end of file diff --git a/contests/Round933/B/main_output2.txt b/contests/Round933/B/main_output2.txt new file mode 100644 index 0000000..d2bb323 --- /dev/null +++ b/contests/Round933/B/main_output2.txt @@ -0,0 +1 @@ +YES \ No newline at end of file diff --git a/contests/Round933/B/main_output3.txt b/contests/Round933/B/main_output3.txt new file mode 100644 index 0000000..d2bb323 --- /dev/null +++ b/contests/Round933/B/main_output3.txt @@ -0,0 +1 @@ +YES \ No newline at end of file diff --git a/contests/Round933/B/main_output4.txt b/contests/Round933/B/main_output4.txt new file mode 100644 index 0000000..d2bb323 --- /dev/null +++ b/contests/Round933/B/main_output4.txt @@ -0,0 +1 @@ +YES \ No newline at end of file diff --git a/contests/Round933/B/main_output5.txt b/contests/Round933/B/main_output5.txt new file mode 100644 index 0000000..d2bb323 --- /dev/null +++ b/contests/Round933/B/main_output5.txt @@ -0,0 +1 @@ +YES \ No newline at end of file diff --git a/contests/Round933/B/main_output6.txt b/contests/Round933/B/main_output6.txt new file mode 100644 index 0000000..d2bb323 --- /dev/null +++ b/contests/Round933/B/main_output6.txt @@ -0,0 +1 @@ +YES \ No newline at end of file diff --git a/contests/Round933/B/main_output7.txt b/contests/Round933/B/main_output7.txt new file mode 100644 index 0000000..ba28208 --- /dev/null +++ b/contests/Round933/B/main_output7.txt @@ -0,0 +1 @@ +NO \ No newline at end of file -- cgit v1.2.3