제출 #532724

#제출 시각아이디문제언어결과실행 시간메모리
532724Alex_tz307송금 (JOI19_remittance)C++17
100 / 100
428 ms28500 KiB
#include <bits/stdc++.h> using namespace std; void testCase() { int n; cin >> n; vector<int> a(n), b(n); for (int i = 0; i < n; ++i) { cin >> a[i] >> b[i]; } for (int rep = 0; rep < 32; ++rep) { for (int i = 0; i < n; ++i) { if (b[i] < a[i]) { int send = (a[i] - b[i] + 1) / 2; if (a[i] < 2 * send) { send -= 1; } a[i] -= 2 * send; a[(i + 1) % n] += send; } } } for (int i = 0; i < n; ++i) { if (a[i] != b[i]) { cout << "No\n"; return; } } cout << "Yes\n"; } int main() { ios_base::sync_with_stdio(false); cin.tie(nullptr); int tests = 1; for (int tc = 0; tc < tests; ++tc) { testCase(); } return 0; }
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