Solved 7 problems in Div4

93 files changed, 2604 insertions, 0 deletions

diff --git a/AtCoder/+3+5+7/main b/AtCoder/+3+5+7/main
new file mode 100755
index 0000000..54124e1
--- /dev/null
+++ b/AtCoder/+3+5+7/main
diff --git a/AtCoder/+3+5+7/main.cpp b/AtCoder/+3+5+7/main.cpp
new file mode 100755
index 0000000..72da36d
--- /dev/null
+++ b/AtCoder/+3+5+7/main.cpp
@@ -0,0 +1,183 @@
+#include<bits/stdc++.h>
+using namespace std;
+
+using ll = long long;
+using pii = pair<int, int>;
+using vpi = vector<pii>;
+using vi = vector<int>;
+using vll = vector<long long>;
+using mpii = map<int, int>;
+using mpll = map<ll, ll>;
+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<typename K, typename V> ostream& operator<<(ostream& os, const pair<K, V>& p);
+template<typename T> ostream& operator<<(ostream& os, const vector<T>& vec);
+template<typename K, typename V> ostream& operator<<(ostream& os, const map<K, V>& m);
+template<typename K, typename V> ostream& operator<<(ostream& os, const unordered_map<K, V>& m);
+template<typename T> ostream& operator<<(ostream& os, const set<T>& s);
+template<typename T> ostream& operator<<(ostream& os, const unordered_set<T>& s);
+
+template<typename K, typename V>
+ostream& operator<<(ostream& os, const pair<K, V>& p) {
+  os << "(" << p.first << ", " << p.second << ")";
+  return os;
+}
+
+template<typename T>
+ostream& operator<<(ostream& os, const vector<T>& vec) {
+  os << "{";
+  for (size_t i = 0; i < vec.size(); ++i) {
+    if (i > 0) os << ", ";
+    os << vec[i];
+  }
+  os << "}";
+  return os;
+}
+
+
+template<typename K, typename V>
+ostream& operator<<(ostream& os, const map<K, V>& m) {
+  os << "{";
+  for (const auto& p : m) {
+    os << p.first << ": " << p.second << ", ";
+  }
+  os << "}";
+  return os;
+}
+
+template<typename K, typename V>
+ostream& operator<<(ostream& os, const unordered_map<K, V>& m) {
+  os << "{";
+  for (const auto& p : m) {
+    os << p.first << ": " << p.second << ", ";
+  }
+  os << "}";
+  return os;
+}
+
+template<typename T>
+ostream& operator<<(ostream& os, const set<T>& s) {
+  int i = 0;
+  os << "{";
+  for (const auto& e : s) {
+    if (i > 0) os << ", ";
+    os << e;
+    i++;
+  }
+  os << "}";
+  return os;
+}
+
+template<typename T>
+ostream& operator<<(ostream& os, const unordered_set<T>& s) {
+  int i = 0;
+  os << "{";
+  for (const auto& e : s) {
+    if (i > 0) os << ", ";
+    os << e;
+    i++;
+  }
+  os << "}";
+  return os;
+}
+
+void print() {
+  cerr << "\n";
+}
+
+template<typename T, typename... TS>
+void print(T val, TS... vals) {
+  cerr << val << " ";
+  print(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 a, b, c;
+  cin >> a >> b >> c;
+  
+  // check if the 3 integers are already equal
+  if (a == b && b == c) {
+    cout << "0\n";
+    return;
+  }
+
+  
+  // calculate the differences between the integers
+  int diff1 = abs(a - b);
+  int diff2 = abs(b - c);
+  int diff3 = abs(c - a);
+  
+  // sort the differences in ascending order
+  int diffs[3] = {diff1, diff2, diff3};
+  sort(diffs, diffs+3);
+  
+  // check if it's possible to make the integers equal
+  if (diffs[2] > diffs[0] + diffs[1]) {
+    cout << "-1\n";
+    return;
+  }
+  
+  // calculate the number of operations needed
+  int operations = 0;
+  if (diffs[0] > 0) {
+    operations++;
+    a += 3;
+    b += 5;
+    c += 7;
+    diffs[0] = abs(a - b);
+    diffs[1] = abs(b - c);
+    diffs[2] = abs(c - a);
+    sort(diffs, diffs+3);
+  }
+  if (diffs[1] > 0) {
+    operations++;
+    a += 3;
+    b += 5;
+    c += 7;
+  }
+  if (diffs[2] > 0) {
+    operations++;
+    a += 3;
+    b += 5;
+    c += 7;
+  }
+  cout << operations << "\n";
+
+}
+
+int main () {
+  ios_base::sync_with_stdio(false);
+  cin.tie(NULL);
+  int tt;
+  cin >> tt;
+  while(tt--) {
+    solve();
+  }
+}
+
+
diff --git a/AtCoder/+3+5+7/main_input0.txt b/AtCoder/+3+5+7/main_input0.txt
new file mode 100644
index 0000000..224c309
--- /dev/null
+++ b/AtCoder/+3+5+7/main_input0.txt
@@ -0,0 +1,5 @@
+4
+2 8 8
+1 1 1
+5 5 10
+10 100 1000
diff --git a/AtCoder/+3+5+7/main_output0.txt b/AtCoder/+3+5+7/main_output0.txt
new file mode 100644
index 0000000..19ef3e0
--- /dev/null
+++ b/AtCoder/+3+5+7/main_output0.txt
@@ -0,0 +1,4 @@
+2
+0
+-1
+315
diff --git a/AtCoder/CallTheIdNumber/main b/AtCoder/CallTheIdNumber/main
new file mode 100755
index 0000000..a4d9237
--- /dev/null
+++ b/AtCoder/CallTheIdNumber/main
diff --git a/AtCoder/CallTheIdNumber/main.cpp b/AtCoder/CallTheIdNumber/main.cpp
new file mode 100755
index 0000000..b0d575d
--- /dev/null
+++ b/AtCoder/CallTheIdNumber/main.cpp
@@ -0,0 +1,149 @@
+#include<bits/stdc++.h>
+using namespace std;
+
+using ll = long long;
+using pii = pair<int, int>;
+using vpi = vector<pii>;
+using vi = vector<int>;
+using vll = vector<long long>;
+using mpii = map<int, int>;
+using mpll = map<ll, ll>;
+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<typename K, typename V> ostream& operator<<(ostream& os, const pair<K, V>& p);
+template<typename T> ostream& operator<<(ostream& os, const vector<T>& vec);
+template<typename K, typename V> ostream& operator<<(ostream& os, const map<K, V>& m);
+template<typename K, typename V> ostream& operator<<(ostream& os, const unordered_map<K, V>& m);
+template<typename T> ostream& operator<<(ostream& os, const set<T>& s);
+template<typename T> ostream& operator<<(ostream& os, const unordered_set<T>& s);
+
+template<typename K, typename V>
+ostream& operator<<(ostream& os, const pair<K, V>& p) {
+  os << "(" << p.first << ", " << p.second << ")";
+  return os;
+}
+
+template<typename T>
+ostream& operator<<(ostream& os, const vector<T>& vec) {
+  os << "{";
+  for (size_t i = 0; i < vec.size(); ++i) {
+    if (i > 0) os << ", ";
+    os << vec[i];
+  }
+  os << "}";
+  return os;
+}
+
+
+template<typename K, typename V>
+ostream& operator<<(ostream& os, const map<K, V>& m) {
+  os << "{";
+  for (const auto& p : m) {
+    os << p.first << ": " << p.second << ", ";
+  }
+  os << "}";
+  return os;
+}
+
+template<typename K, typename V>
+ostream& operator<<(ostream& os, const unordered_map<K, V>& m) {
+  os << "{";
+  for (const auto& p : m) {
+    os << p.first << ": " << p.second << ", ";
+  }
+  os << "}";
+  return os;
+}
+
+template<typename T>
+ostream& operator<<(ostream& os, const set<T>& s) {
+  int i = 0;
+  os << "{";
+  for (const auto& e : s) {
+    if (i > 0) os << ", ";
+    os << e;
+    i++;
+  }
+  os << "}";
+  return os;
+}
+
+template<typename T>
+ostream& operator<<(ostream& os, const unordered_set<T>& s) {
+  int i = 0;
+  os << "{";
+  for (const auto& e : s) {
+    if (i > 0) os << ", ";
+    os << e;
+    i++;
+  }
+  os << "}";
+  return os;
+}
+
+void print() {
+  cerr << "\n";
+}
+
+template<typename T, typename... TS>
+void print(T val, TS... vals) {
+  cerr << val << " ";
+  print(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
+ */
+// 1 0 1 1 0 
+
+void solve() {
+  int n;
+  cin >> n;
+  vi v(n);
+  vector<bool> checked(n);
+  int len = n;
+  for (auto &x : v) cin >> x;
+  for (int i = 0; i < n; i++) {
+    if (!checked[i]) {
+      checked[v[i] - 1] = true;
+      len--;
+    }
+  }
+  cout << count(all(checked), false) << '\n';
+  for (int i = 0; i < checked.size(); i++) {
+    if (!checked[i]) {
+      cout << i + 1 << ' ';
+    }
+  }
+  cout << '\n';
+
+
+}
+
+int main () {
+  ios_base::sync_with_stdio(false);
+  cin.tie(NULL);
+  solve();
+}
+
+
diff --git a/AtCoder/CallTheIdNumber/main_input0.txt b/AtCoder/CallTheIdNumber/main_input0.txt
new file mode 100644
index 0000000..60c723c
--- /dev/null
+++ b/AtCoder/CallTheIdNumber/main_input0.txt
@@ -0,0 +1,2 @@
+5
+3 1 4 5 4
diff --git a/AtCoder/CallTheIdNumber/main_input1.txt b/AtCoder/CallTheIdNumber/main_input1.txt
new file mode 100644
index 0000000..d4e3ed5
--- /dev/null
+++ b/AtCoder/CallTheIdNumber/main_input1.txt
@@ -0,0 +1,2 @@
+20
+9 7 19 7 10 4 13 9 4 8 10 15 16 3 18 19 12 13 2 12
diff --git a/AtCoder/CallTheIdNumber/main_output0.txt b/AtCoder/CallTheIdNumber/main_output0.txt
new file mode 100644
index 0000000..810122a
--- /dev/null
+++ b/AtCoder/CallTheIdNumber/main_output0.txt
@@ -0,0 +1,2 @@
+2
+2 4
diff --git a/AtCoder/CallTheIdNumber/main_output1.txt b/AtCoder/CallTheIdNumber/main_output1.txt
new file mode 100644
index 0000000..78d261c
--- /dev/null
+++ b/AtCo