Submission #155577

#	Time	Username	Problem	Language	Result	Execution time	Memory
155577		tevdore	Sure Bet (CEOI17_sure)	C++14	100 / 100	253 ms	2040 KiB

sure

#include<bits/stdc++.h>
using namespace std;
int n,i,k1,k2;
double q1,q2,ans,answer;
double a[1000001],b[1000001];
int main(){
	cin>>n;
	for(i=1;i<=n;i++){
		cin>>a[i]>>b[i];
	}
	sort(a+1,a+n+1);
	sort(b+1,b+n+1);
	k1=n;
	k2=n;
	while(true){
		ans=min(q1,q2);
		answer=max(ans,answer);
		if(q1 >= q2){
		   if(k2 == 0)break;
		   q2+=b[k2]-1;
		   k2--;
		   q1-=1;
		   continue;
		}
		else{
			if(k1 == 0)break;
			q1+=a[k1]-1;
			k1--;
			q2-=1;
			
		}
	}
	printf("%.4lf",(double)answer);
}

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