CCF201912_1
题解：
#include<bits/stdc++.h>using namespace std;int n;bool shouldSkip(int num)
{if (num % 7 == 0){return true;}while (num > 0){if (num % 10 == 7){return true;}num /= 10;}return false;
}
int main()
{scanf("%d", &n);int b[4] = { 0 };//用于记录四个人被跳过的次数for (int i = 1; i <= n; i++){int current_person = (i - 1) % 4;if (shouldSkip(i)){b[current_person]++;n += 1;}}for (int i = 0; i < 4; i++){cout << b[i] << endl;}return 0;
}