This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include<cstdio>
int P[25],D[25];
double DP[1048576];
int N;
int main()
{
	scanf("%d",&N);
	for(int i=0;i<N;i++) scanf("%d%d",P+i,D+i);
	for(int i=0;i<N;i++)
		DP[1<<i]=P[i]*D[i]/100.;
	for(int i=1;i<(1<<N);i++)
	{
		if(DP[i]>0.001) continue;
		int btcnt=0;
		for(int j=0;j<N;j++)
		{
			if(i&(1<<j)) 
			{
				btcnt++;
				DP[i]+=P[j]*D[j]/100.+(100-P[j])*DP[i-(1<<j)]/100.;
			}
		}
		DP[i]/=btcnt;
	}
	double maxv=0;
	for(int i=1;i<(1<<N);i++)
	{
		if(maxv<DP[i]) maxv=DP[i];
	}
	printf("%.12lf",maxv);
	return 0;
}
| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... |