1

AC

#include <iostream>#include <cstdio>using namespace std; double ans,S,H,p,T,V,n,l;int main(){	cin>>T;	while(T--)	{		cin>>n;		ans=0;		for(int i=1;i<=n;i++)		{			cin>>l>>p;			if(p<1.0)			ans+=p*l*l*l;			else			ans+=l*l*l;		}		cin>>S>>H>>V;		ans+=V;		if(ans/S<=H)			printf("%.2f\n",ans/S);		else 			printf("%.2f\n",H);	}} 

wa

#include <iostream>#include <cstdio>using namespace std; double ans,S,H,p[1005],T,V,n,l[1005];int main(){	cin>>T;	while(T--)	{		cin>>n;		for(int i=1;i<=n;i++)		{			cin>>l[i]>>p[i];		}		cin>>S>>H>>V;		ans=V;		for(int i=1;i<=n;i++)		{			if(p[i]<1.0)			ans+=p[i]*l[i]*l[i]*l[i];			else			ans+=l[i]*l[i]*l[i];		}		if(ans/S<=H)			printf("%.2f\n",ans/S);		else 			printf("%.2f\n",H);	}}