Submission #781531

#TimeUsernameProblemLanguageResultExecution timeMemory
781531andecaandeciStrange Device (APIO19_strange_device)C++17
0 / 100
5065 ms524288 KiB
#include <bits/stdc++.h>
#define int long long
#define fi first
#define se second
#define keish                             ios_base::sync_with_stdio(0);       cin.tie(0); cout.tie(0)
      
using namespace std;

int n, a, b, l, r;

signed main(){
      keish;
  cin >> n >> a >> b;
      // if(n == 1){
      //       set<pair<int, int>> s;
      //       for(int i = 0; i < n; i++){
      //             cin >> l >> r;
      //             for(int t = l; t <= r; t++){
      //                   s.insert({(t + t / b) % a, t % b});
      //             }
      //       }
      //       cout << s.size() << '\n';
      // }else if(b == 1){
            set<int> s;
            for(int i = 0; i < n; i++){
                  cin >> l >> r;
                  for(int t = l; t <= r; t++){
                        s.insert((2 * t) % a);
                  }
            }
            cout << s.size() << '\n';
      // }
}     
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