제출 #595187

#제출 시각아이디문제언어결과실행 시간메모리
595187elkernosRemittance (JOI19_remittance)C++17
100 / 100
236 ms36324 KiB
#include <bits/stdc++.h> using namespace std; #define int long long int32_t main() { cin.tie(0)->sync_with_stdio(0); int n; cin >> n; vector<int> a(n + 1), b(n + 1); for(int i = 1; i <= n; i++) { cin >> a[i] >> b[i]; } int chuj = 0; for(int i = 1; i <= n; i++) { chuj |= (b[i] > 0); } if(!chuj) { ; } else { int rob = 1; while(rob) { rob = 0; for(int i = 1; i <= n; i++) { if(a[i] > b[i]) { int take = (a[i] - b[i] + 1) / 2; a[i] -= 2 * take; a[i % n + 1] += take; rob = 1; } } } } int good = 1; for(int i = 1; i <= n; i++) { good &= (a[i] == b[i]); } cout << (good ? "Yes" : "No") << '\n'; }
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