就对了第四个啊?

#include<bits/stdc++.h>
using namespace std;
double a[21];
double s[21];
double d;
int main(){
    double n,x=10,ans=0,j=0;cin>>n;
    for(int i=0;i<n;i++){
    	j=1+d;
    	d=0;
        cin>>s[i]>>a[i];
        if(s[i]>=0)x-=s[i];
        else x+=s[i];
    	if(x<=0){
    		break;
		}
		while(a[i]>=j){
			a[i]-=j;
			ans++;
			j*=2;
		}
		if(a[i]!=0)d+=s[i];
    }
	cout<<ans<<" ";
	cout<<d;
}