Submission #609889

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
609889	2022-07-28 02:55:40	penguinhacker	Remittance (JOI19_remittance)	C++17	0 / 100	1 ms	340 KiB

remittance

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#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ar array
const int mxN=1e6;
int n;
ll a[mxN], b[mxN];
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cin >> n;
  for (int i=0; i<n; ++i)
    cin >> a[i] >> b[i];
  for (int i=0, change=0; change<n+2; i=i+1<n?i+1:0) {
    if (a[i]>b[i]&&a[i]>=2) {
      ll x=(a[i]-b[i]+1)/2;
      a[i+1<n?i+1:0]+=x;
      a[i]-=2*x;
      change=0;
    } else
      ++change;
  }
  for (int i=0; i<n; ++i)
    if (a[i]!=b[i]) {
      cout << "No";
      return 0;
    }
 
 
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• Subtask 1: 0 / 15
• Subtask 2: 0 / 40
• Subtask 3: 0 / 45