# | TimeUTC-0 | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
163916 | maruii | Remittance (JOI19_remittance) | C++14 | 1049 ms | 43656 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
using pii = pair<int, int>;
#define ff first
#define ss second
int N, A[1000006], X[1000006];
set<pii> s;
int main() {
ios_base::sync_with_stdio(0), cin.tie(0);
cin >> N;
for (int i = 1; i <= N; ++i) {
int x;
cin >> x >> X[i];
A[i] = x - X[i];
s.insert(pii(A[i], i));
}
while (1) {
auto t = (--s.end())->ss;
if (A[t] < 2) break;
while (A[t] > 1) {
s.erase(pii(A[t], t));
s.erase(pii(A[t % N + 1], t % N + 1));
int a = A[t] / 2;
A[t] -= a * 2;
A[t % N + 1] += a;
s.insert(pii(A[t], t));
s.insert(pii(A[t % N + 1], t % N + 1));
t = t % N + 1;
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