| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1316087 | comet0 | Group Photo (JOI21_ho_t3) | C++20 | 0 ms | 332 KiB |
#include <bits/stdc++.h>
using namespace std;
int main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
int n; cin >> n;
vector<int> a(n); for (auto& x : a) cin >> x;
int ans = 0;
for (int i = 0; i < n - 1; i++) {
if (a[i] < a[i+1] + 2) continue;
int j = i + 1;
while (j < n && a[i] >= a[j] + 2) j++;
if (j >= n) continue;
while (j > i + 1) {
swap(a[j], a[j-1]);
ans++;
j--;
}
}
cout << ans;
}
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