题解 | #与7无关的数#
与7无关的数
http://www.nowcoder.com/practice/776d401bf86d446fa783f0bef7d3c096
#include <iostream>
#include <cstdio>
using namespace std;
int main(){
int n;
while(scanf("%d",&n)!=EOF){
int sum=0;
for(int i=1;i<=n;++i){
if(i%7!=0&&i%10!=7&&i/10!=7){
sum+=i*i;
}
}
printf("%d",sum);
}
}
