1341 与3和5无关的数

#include<iostream>using namespace std;int main(){int n,sum=0;cin >> n;for (int i = 1; i <= n; i++){int flag = 1;if (i % 3 == 0 || i % 5 == 0||i%10==3||i%10==5||i/10%10==3||i/10%10==5||i/100==3||i/100==5)flag = 0;if (flag)sum += i*i;}cout << sum << endl;return 0;}