听说灌水区大佬多

#include <bits/stdc++.h>
#include <cstdio>
using namespace std;
int tn[1000],pn[1000];
int main(){
	int n;
	cin>>n;
	int sum=0;
	for(int i=1;i<=n;i++){
		cin>>tn[i]>>pn[i];
		sum+=100/tn[i]*pn[i];
	}
	int st;
	cin>>st;
	if(sum>=st){
		cout<<"Already Au.";
		return 0;
	}
	for(int i=1;i<=n;i++){
		int x=sum;
		if(tn[i]==pn[i]){
			cout<<"NaN"<<endl;
		}
		else{
			bool f=0;
			for(int j=1;j<=tn[i]-pn[i];j++){
           x+=100/tn[i];
				if(x>=st){
					cout<<j;
					f=1;
					cout<<endl;
					break;
				}
			}
			if(!f){
				cout<<"NaN"<<endl;
			}
		}
	}
	return 0;
}

上面AC

#include <bits/stdc++.h>
#include <cstdio>
using namespace std;
int tn[1000],pn[1000];
int main(){
	int n;
	cin>>n;
	int sum=0;
	for(int i=1;i<=n;i++){
		cin>>tn[i]>>pn[i];
		sum+=100/tn[i]*pn[i];
	}
	int st;
	cin>>st;
	if(sum>=st){
		cout<<"Already Au.";
		return 0;
	}
	for(int i=1;i<=n;i++){
		int x=sum;
		if(tn[i]==pn[i]){
			cout<<"NaN"<<endl;
		}
		else{
			bool f=0;
			for(int j=1;j<=tn[i]-pn[i];j++){
				if(x+100/tn[i]*(pn[i]+j)>=st){
					cout<<j;
					f=1;
					cout<<endl;
					break;
				}
			}
			if(!f){
				cout<<"NaN"<<endl;
			}
		}
	}
	return 0;
}

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