oj.uz

답안 #928370

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
928370 2024-02-16T09:16:06 Z Aiperiii Sure Bet (CEOI17_sure) C++14
20 / 100
 43 ms 600 KB 
#include <bits/stdc++.h>
#define int long long
#define ff first
#define ss second
#define all(x) x.begin(),x.end()
#define pb push_back
using namespace std;
const int N=1e5+5;
signed main(){
    int n;
    cin>>n;
    vector <long double> a(n),b(n);
    for(int i=0;i<n;i++){
        cin>>a[i]>>b[i];
    }
    long double ans=-1e9;
    for(int mask1=0;mask1<(1<<n);mask1++){
        long double sum1=0,cnt1=0;
        for(int i=0;i<n;i++){
            if((mask1 & (1<<i))!=0){
                cnt1++;
                sum1+=a[i];
            }
        }
        //cout<<sum1<<" "<<cnt1<<"\n";
        for(int mask2=0;mask2<(1<<n);mask2++){
            long double sum2=0,cnt2=0;
            for(int i=0;i<n;i++){
                if((mask2 & (1<<i))!=0){
                    cnt2++;
                    sum2+=b[i];
                }
            }
            long double x=min(sum1-cnt1-cnt2,sum2-cnt1-cnt2);
            ans=max(ans,x);
        }
    }
    if(ans<0)ans=0;
    cout<<fixed<<setprecision(4)<<ans<<"\n";
}
/*
4
1.4 3.7
1.2 2
1.6 1.4
1.9 1.5
 */

Subtask #1
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 43 ms 348 KB Output is correct
4 Correct 43 ms 348 KB Output is correct
5 Correct 43 ms 348 KB Output is correct
6 Correct 43 ms 600 KB Output is correct

Subtask #2
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 43 ms 348 KB Output is correct
4 Correct 43 ms 348 KB Output is correct
5 Correct 43 ms 348 KB Output is correct
6 Correct 43 ms 600 KB Output is correct
7 Incorrect 0 ms 348 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #3
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 43 ms 348 KB Output is correct
4 Correct 43 ms 348 KB Output is correct
5 Correct 43 ms 348 KB Output is correct
6 Correct 43 ms 600 KB Output is correct
7 Incorrect 0 ms 348 KB Output isn't correct
8 Halted 0 ms 0 KB -