Submission #1032859

#	Time	Username	Problem	Language	Result	Execution time	Memory
1032859		amine_aroua	Sure Bet (CEOI17_sure)	C++17	20 / 100	50 ms	600 KiB

sure

#include<bits/stdc++.h> 
using namespace std;
int main()
{
    int n ;
    cin>>n;
    vector<double> a(n) , b(n);
    int sm1 = 0 , sm2 = 0;
    for(int i = 0 ; i < n ; i++)
    {
        cin>>a[i]>>b[i];
        sm1+=a[i] - 2;
        sm2+=b[i] - 2;
    }

    double ans = 0;
    for(int mask = 0 ; mask < (1<<(2 * n)) ; mask++)
    {
        double f = 0 , s = 0;
        for(int i = 0 ; i < n ; i++)
        {
            int bit = (mask >> (2*i)) - 4 * (mask >> (2*(i + 1)));
            if(bit == 0)
            {
                continue;
            }
            else if(bit == 1)
            {
                f+=a[i] - 1;
                s--;
            }
            else if(bit == 2)
            {
                f--;
                s+=b[i] - 1;
            }
            else
            {
                f+=a[i] - 2;
                s+=b[i] - 2;
            }
        }
        ans = max(ans , min(f , s));
    }
    printf("%.4lf",(double)ans);
}

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