| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1221482 | gry3125 | Bouquet (EGOI24_bouquet) | C++20 | 53 ms | 1864 KiB |
#include <bits/stdc++.h>
#define f0r(i,n) for(int i=0;i<n;i++)
#define all(v) (v).begin(),(v).end()
#define fi first
#define se second
typedef long long int ll;
using namespace std;
int main() {
int n; cin >> n;
vector<pair<int,int>> v(n);
for (int i = 0; i < n; i++) {
int L, R; cin >> L >> R;
L = max(0, i-L); R = min(n-1, i+R);
v[i] = {R, L};
}
sort(all(v));
ll cur = -1, ans = 0;
for (int i = 0; i < n; i++) {
if (v[i].se <= cur) continue;
ans++; cur = v[i].fi;
}
cout << ans;
return 0;
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