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求高人指点!我先把111...放到数组中,然后依次判断能否整除n。 9901运行都正确,n<10000. 为什么WA? 小弟比较水,还望高手不吝赐教。 #include<stdio.h> int main(){ int n,k,i; __int64 a[20]; a[0]=1; for(i=1;i<20;i++) a[i] = a[i-1]*10+1; while(scanf("%d",&n)!=EOF){ for(i=0;i<20;i++) if(a[i]%n==0){ k = i; break; } printf("%d\n",k+1); } return 0; } Followed by:
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