BOJ 8620 - Hurtownia [C++]

문제

링크

풀이

#include <iostream>
#include <map>
using namespace std;
 
void solve(void) {
  int n; cin >> n;
 
  map<char, int> mp;
  while (n--) {
    char c; string s; cin >> c >> s;
    mp[c] += (s[0] == '+' ? 1 : -1) * stoi(s.substr(1));
  }
 
  for (auto [k, v] : mp) {
    cout << k << " " << v << "\n";
  }
}
 
int main(void) {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
 
  solve();
  return 0;
}