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Safety index of CCF 202012-1 period end forecast

2022-07-18 02:39:00 【Steal the mask and run away】

hi ！ One more mouthful ： Recently started preparing CSP authentication , So simply make a question brushing record , Urge yourself to make continuous efforts ！ The solution is based on my understanding as a rookie , So although the code is correct , But it may not be the best solution , If the partners who study together have better solutions , We can share and learn together , Make progress together ！

1、 Problem description ：

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2、 Sample format ：

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3、 Code ：

#include<iostream>
using namespace std;
#define N 100000
int max(int x,int y);
int main(){
    
	int n;
	int w[N],s[N];
	cin>>n;
	
	int sum=0;
	for(int i=0; i<n; i++)
	{
    
		cin>>w[i]>>s[i];
		sum += w[i]*s[i];
	}
	int temp = max(0,sum);
	cout<<temp<<endl;
	return 0;
}

int max(int x,int y){
    
	if(x>=y)
		return x;
	else
		return y;
}
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