Submission #425648

#	Time	Username	Problem	Language	Result	Execution time	Memory
425648		oleh1421	Sure Bet (CEOI17_sure)	C++17	20 / 100	2 ms	460 KiB

sure

#include<bits/stdc++.h>
typedef long long ll;
using namespace std;
const int N=510;
const ll mod=1000000007;
const ll inf=1e15;
double a[N],b[N];
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n;cin>>n;
    vector<double>v;
    for (int i=1;i<=n;i++) {
        cin>>a[i]>>b[i];
        v.push_back(a[i]);
        v.push_back(b[i]);
    }
    sort(a+1,a+n+1);
    sort(b+1,b+n+1);
    reverse(a+1,a+n+1);
    reverse(b+1,b+n+1);
    for (int i=2;i<=n;i++) a[i]+=a[i-1];
    for (int i=2;i<=n;i++) b[i]+=b[i-1];
    double res=0.0;
    for (int i=1;i<=n;i++){
        for (int j=1;j<=n;j++){
            res=max(res,min(a[i]-i-j,b[j]-i-j));
        }
    }
    cout<<setprecision(4)<<fixed<<res<<endl;
    return 0;
}

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