BOJ 9793 - Length and Frequency of Sentences [C++]

문제

링크

풀이

#include <iostream>
#include <map>
#include <sstream>
#include <string>
using namespace std;
 
inline int calc(const string &s) {
  int ret = 0;
  stringstream ss(s); string t;
  while (ss >> t) ret++;
  return ret;
}
 
void solve(void) {
  int n; cin >> n;
  cin.ignore();
 
  map<int, int> mp;
  while (n--) {
    string s; getline(cin, s);
    mp[calc(s)]++;
  }
 
  for (const auto &p : mp) {
    cout << p.first << " " << p.second << "\n";
  }
}
 
int main(void) {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
 
  solve();
  return 0;
}