Submission #1027495

#	Time	Username	Problem	Language	Result	Execution time	Memory
1027495		ara_ara	Sure Bet (CEOI17_sure)	C++17	100 / 100	59 ms	2128 KiB

sure

#include <bits/stdc++.h>
#define int long long
using namespace std;
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n;
    cin>>n;
    double a[n+1],b[n+1];
    for(int i=1;i<=n;i++){
        cin>>a[i]>>b[i];
        a[i]--;
        b[i]--;
    }
    sort(a+1,a+n+1,greater<double>());
    sort(b+1,b+n+1,greater<double>());
    int j=0;
    double sa=0,sb=0,res=0;
    for(int i=1;i<=n;i++){
        sa+=a[i];
        while(j<=n && (min(sa-j,sb-i)<min(sa-(j+1),(sb+b[j+1])-i))){
            j++;
            sb+=b[j];
        }
        res=max(res,min(sa-j,sb-i));
    }
    cout<<fixed<<setprecision(4)<<res;
}

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