ABC 252, in process of making c, got idea but got sidetracked

atcoder/beginner_contests/252/a.cpp

@@ -0,0 +1,18 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+
+int main(){
+    ios::sync_with_stdio(0);
+    cin.tie(0);
+
+    int n;
+    cin >> n;
+    
+    cout << (char)n << endl;
+
+    cout << flush;
+
+    return 0;
+}

atcoder/beginner_contests/252/b.cpp

@@ -0,0 +1,44 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+
+int main(){
+    ios::sync_with_stdio(0);
+    cin.tie(0);
+
+    int n, k;
+    cin >> n >> k;
+
+    set<int> tasty_foods;
+    int tastiest = 0;
+
+    for(int i = 0; i < n; ++i){
+        int a;
+        cin >> a;
+        
+        if(a > tastiest){
+            tasty_foods.clear();
+            tastiest = a;
+            tasty_foods.insert(i+1);
+        } else if(a == tastiest){
+            tasty_foods.insert(i+1);
+        }
+    }
+
+    for(int i = 0; i < k; ++i){
+        int b;
+        cin >> b;
+
+        if(tasty_foods.count(b)){
+            cout << "Yes" << endl;
+            return 0;
+        }
+    }
+
+    cout << "No" << endl;
+
+    cout << flush;
+
+    return 0;
+}

atcoder/beginner_contests/252/c.cpp

@@ -0,0 +1,51 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+
+int main(){
+    ios::sync_with_stdio(0);
+    cin.tie(0);
+
+    int n;
+    cin >> n;
+
+    vector<map<int, int>> reels(n);
+
+    for(int i = 0; i < n; ++i){
+        long long reel_in;
+        cin >> reel_in;
+
+        for(int j = 9; j >= 0; --j){
+            int l = reel_in % 10;
+            reel_in /= 10;
+
+            reels[i][l] = j;
+        }
+    }
+
+    set<int> button_presses;
+    int min_time = 100000;
+
+    for(int i = 0; i < 10; ++i){
+        button_presses.clear();
+
+        for(int j = 0; j < n; ++j){
+            int time = reels[i][j];
+            while(button_presses.count(time)){
+                time += 10;
+            }
+            button_presses.insert(time);
+
+            if(time < min_time){
+                min_time = time;
+            }
+        }
+    }
+
+    cout << min_time << endl;
+
+    cout << flush;
+
+    return 0;
+}

atcoder/beginner_contests/252/d.cpp

@@ -0,0 +1,25 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+void test_case(int tc){
+
+}
+
+
+
+int main(){
+    ios::sync_with_stdio(0);
+    cin.tie(0);
+
+    int t;
+    cin >> t;
+
+    for(int tc = 1; tc <= t; ++tc){
+        test_case(tc);
+    }
+
+    cout << flush;
+
+    return 0;
+}

atcoder/beginner_contests/252/e.cpp

@@ -0,0 +1,25 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+void test_case(int tc){
+
+}
+
+
+
+int main(){
+    ios::sync_with_stdio(0);
+    cin.tie(0);
+
+    int t;
+    cin >> t;
+
+    for(int tc = 1; tc <= t; ++tc){
+        test_case(tc);
+    }
+
+    cout << flush;
+
+    return 0;
+}

atcoder/beginner_contests/252/ex.cpp

@@ -0,0 +1,25 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+void test_case(int tc){
+
+}
+
+
+
+int main(){
+    ios::sync_with_stdio(0);
+    cin.tie(0);
+
+    int t;
+    cin >> t;
+
+    for(int tc = 1; tc <= t; ++tc){
+        test_case(tc);
+    }
+
+    cout << flush;
+
+    return 0;
+}

atcoder/beginner_contests/252/f.cpp

@@ -0,0 +1,25 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+void test_case(int tc){
+
+}
+
+
+
+int main(){
+    ios::sync_with_stdio(0);
+    cin.tie(0);
+
+    int t;
+    cin >> t;
+
+    for(int tc = 1; tc <= t; ++tc){
+        test_case(tc);
+    }
+
+    cout << flush;
+
+    return 0;
+}

atcoder/beginner_contests/252/g.cpp

@@ -0,0 +1,25 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+void test_case(int tc){
+
+}
+
+
+
+int main(){
+    ios::sync_with_stdio(0);
+    cin.tie(0);
+
+    int t;
+    cin >> t;
+
+    for(int tc = 1; tc <= t; ++tc){
+        test_case(tc);
+    }
+
+    cout << flush;
+
+    return 0;
+}