Submission #234283

#	Time	Username	Problem	Language	Result	Execution time	Memory
234283		nafis_shifat	Sure Bet (CEOI17_sure)	C++14	100 / 100	197 ms	5600 KiB

sure

#include <bits/stdc++.h>
using namespace std;

int main() {
    int n;
    cin>>n;
    
    vector<double> v1,v2;
    
    for(int i=0;i<n;i++) {
        double a,b;
        cin>>a>>b;
        v1.push_back(a);
        v2.push_back(b);
    }
    
    sort(v1.begin(),v1.end(),greater<double>());
    sort(v2.begin(),v2.end(),greater<double>());
    
    double s1[n],s2[n];
    s1[0]=v1[0];
    s2[0]=v2[0];
    for(int i=1;i<n;i++) {
        s1[i]=s1[i-1]+v1[i];
        s2[i]=s2[i-1]+v2[i];
    }
    
    
    
    
    
    double res=0;
    int ptr=0;
    for(int i=0;i<n;i++) {
        while(ptr+1<n && s1[i]>s2[ptr]) {
            int t=i+ptr+2;
            res=max(res,min(s1[i],s2[ptr])-t);
            ptr++;
        }
        int t=i+ptr+2;
        res=max(res,min(s1[i],s2[ptr])-t);
    }
    
    cout<<fixed<<setprecision(4);
    cout<<res<<endl;
    
    
    
    
	return 0;
}

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