BOJ 9777 - Birthday Statistics [C++]

문제

링크

풀이

#include <iostream>
#include <string>
#include <vector>
using namespace std;
 
void solve(void) {
  int n; cin >> n;
  
  vector<int> ans(13, 0);
  while (n--) {
    int a; string b; cin >> a >> b;
    int c = b.find_first_of("/"), d = b.find_last_of("/");
    ans[stoi(b.substr(c+1, d-c-1))]++;
  }
 
  for (int i=1; i<=12; i++) {
    cout << i << " " << ans[i] << "\n";
  }
}
 
int main(void) {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
 
  solve();
  return 0;
}