【CSP】报数

#include <bits/stdc++.h>
using namespace std;

string change(int num){
  string s;
  stringstream ss;
  ss << num;
  ss >> s;
  return s;
}

int main(){
  
  int n;
  cin >> n;
  
  int a=0, b=0, c=0, d=0;
  
  for(int i = 1; i <= n; i++){
    if(i%4==1) {
      if(i%7==0 || change(i).find("7")!=string::npos){
        a++;
        n++;
      }
    } else if(i%4==2){
      if(i%7==0 || change(i).find("7")!=string::npos){
        b++;n++;
      }
    } else if(i%4==3){
      if(i%7==0 || change(i).find("7")!=string::npos){
        c++;n++;
      }
    } else if(i%4==0){
      if(i%7==0 || change(i).find("7")!=string::npos){
        d++;n++;
      }
    } 
  }
  cout << a << endl << b << endl << c << endl << d;
}