BOJ 7168 - Nonogramm [C++]

문제

링크

풀이

#include <iostream>
#include <vector>
using namespace std;
 
inline vector<int> row(int n, int m, const vector<vector<char>> &v, int idx) {
  vector<int> ret;
  int cnt = v[idx][0] == '#';
  for (int i=1; i<m; i++) {
    if (v[idx][i] == '#') cnt++;
    else {
      if (cnt) ret.push_back(cnt);
      cnt = 0;
    }
  }
  if (cnt) ret.push_back(cnt);
  return ret;
}
 
inline vector<int> col(int n, int m, const vector<vector<char>> &v, int idx) {
  vector<int> ret;
  int cnt = v[0][idx] == '#';
  for (int i=1; i<n; i++) {
    if (v[i][idx] == '#') cnt++;
    else {
      if (cnt) ret.push_back(cnt);
      cnt = 0;
    }
  }
  if (cnt) ret.push_back(cnt);
  return ret;
}
 
void solve(void) {
  int n, m; cin >> n >> m;
  vector<vector<char>> v(n, vector<char>(m));
  for (int i=0; i<n; i++) for (int j=0; j<m; j++) cin >> v[i][j];
 
  for (int i=0; i<n; i++) {
    vector<int> r = row(n, m, v, i);
    if (r.empty()) r.push_back(0);
    for (int x : r) cout << x << " ";
    cout << "\n";
  }
 
  for (int i=0; i<m; i++) {
    vector<int> c = col(n, m, v, i);
    if (c.empty()) c.push_back(0);
    for (int x : c) cout << x << " ";
    cout << "\n";
  }
}
 
int main(void) {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
 
  solve();
  return 0;
}