제출 #1027174

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1027174		toan2602	Sure Bet (CEOI17_sure)	C++14	0 / 100	0 ms	344 KiB

sure

#include<bits/stdc++.h>

using namespace std;
int n;
double a[100005], b[100005];
void solve() {
	cin >> n;
	for (int i = 1; i <= n; i++) cin >> a[i] >> b[i];
	sort(a+1,a+1+n, greater<>());
	sort(b+1,b+1+n, greater<>());
	double ra, rb, res = 0;
	int p1, p2;
	ra = rb = 0;
	p1 = p2 = 1;
	for (int i = 1; i <= 2*n; i++) {
		if((ra < rb && p1 <= n) || p2 == n+1) {
			ra += a[p1];
			p1++;
		}
		else {
			rb += b[p2];
			p2++;
		}
		res = max(res, min(ra-i,rb-i));
	}
	cout << res;
}

signed main() {
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	if(fopen("input.inp","r")){
		freopen("input.inp", "r", stdin);
		freopen("output.out", "w", stdout);
	}
	int t = 1;
	// cin >> t;
	while(t--) {
		solve();
	}
}

컴파일 시 표준 에러 (stderr) 메시지

sure.cpp: In function 'int main()':
sure.cpp:32:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |   freopen("input.inp", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
sure.cpp:33:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |   freopen("output.out", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 40
• Subtask 3: 0 / 40