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Submission #495540

# Submission time Handle Problem Language Result Execution time Memory
495540 2021-12-19T10:20:13 Z 600Mihnea Remittance (JOI19_remittance) C++17
0 / 100
 1 ms 336 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int N = (int) 1e6 + 7;
int n;
ll a[N];
ll b[N];

signed main() {
  ios::sync_with_stdio(0); cin.tie(0);

  //freopen ("input", "r", stdin);

  cin >> n;
  for (int i = 0; i < n; i++) {
    cin >> a[i] >> b[i];
  }

  while (1) {
    bool change = false;
    for (int i = 0; i < n; i++) {
      int j = (i + 1) % n;
      int extra = a[i] - b[i];
      if (extra >= 2) {
        change = true;
        a[i] -= extra / 2 * 2;
        a[j] += extra / 2;
      }
    }
    if (!change) {
      break;
    }
  }

  for (int i = 0; i < n; i++) {
    if (a[i] != b[i]) {
      cout << "No\n";
      exit(0);
    }
  }

  cout << "Yes\n";




  return 0;
}

Subtask #1
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 1 ms 324 KB Output is correct
8 Incorrect 1 ms 208 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #2
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 1 ms 324 KB Output is correct
8 Incorrect 1 ms 208 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #3
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 1 ms 324 KB Output is correct
8 Incorrect 1 ms 208 KB Output isn't correct
9 Halted 0 ms 0 KB -