oj.uz

Submission #519135

# Submission time Handle Problem Language Result Execution time Memory
519135 2022-01-25T17:56:26 Z cig32 Remittance (JOI19_remittance) C++17
0 / 100
 2 ms 204 KB 
#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
using namespace std;
mt19937_64 rng((int)std::chrono::steady_clock::now().time_since_epoch().count());
const int MAXN = 3e5 + 10;
const int MOD = 1e9 + 7;
#define int long long
int rnd(int x, int y) {
  int u = uniform_int_distribution<int>(x, y)(rng); return u;
}
void solve(int tc) {
  int n;
  cin >> n;
  vector<int> a(n), b(n);
  for(int i=0; i<n; i++) cin >> a[i] >> b[i];
  for(int it=0; it<100; it++) {
    for(int i=0; i<n; i++) {
      int r = rnd(0, 1);
      if(r && a[i] >= 2) a[i] -= 2, a[(i+1) % n]++;
    }
    for(int i=0; i<3000; i++) {
      for(int j=0; j<n; j++) {
        if(a[j] > b[j]) {
          int c = (a[j] - b[j]) / 2;
          a[j] -= c * 2;
          a[(j+1) % n] += c;
        }
      }
    }
    bool sad = 0;
    for(int i=0; i<n; i++) {
      if(a[i] != b[i]) {
        sad = 1; break;
      }
    }
    if(!sad) {
      cout << "Yes\n";
      return;
    }
  }
  cout << "No\n";
}
 
int32_t main(){
  ios::sync_with_stdio(0); cin.tie(0);
  int t = 1; //cin >> t;
  for(int i=1; i<=t; i++) solve(i);
}

Subtask #1
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Incorrect 1 ms 204 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Incorrect 1 ms 204 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Incorrect 1 ms 204 KB Output isn't correct
4 Halted 0 ms 0 KB -