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Re:帮忙看下怎么会超时呢

Posted by zhuangzebo at 2011-04-14 13:32:33 on Problem 2262
In Reply To:帮忙看下怎么会超时呢 Posted by:tangwenwu at 2011-03-28 19:23:34
> #include<stdio.h>
> int prime(int k){
> 	int flag=1;
> 	int j;
> 	for(j=2;j<=k/2;j++){
> 			if(k%j==0){
> 				flag=0;
> 			break;
> 	}
> 	}
> 				return flag;
> 			}
> int main(){
> int i,n,f=0;
> 	for(scanf("%d",&n);n!=0;scanf("%d",&n)){
> 		for(i=3;i<=n/2;i=i+2){
> 			if(prime(i)&′(n-i)){
> 		printf("%d = %d + %d\n",n,i,n-i);
> 		f=1;
> 		break;
> 			}
> 		}
> 		if(!f)
> 			printf("Goldbach's conjecture is wrong.\n");
> 			}
> return (0);
> }

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