제출 #501079

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
501079	2022-01-02 10:38:39	arujbansal	Lasers (NOI19_lasers)	C++17	100 / 100	457 ms	74840 KiB

lasers

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#include <bits/stdc++.h>
using namespace std;
#define sz(x) (int) (x).size()
#define all(x) (x).begin(), (x).end()
const int INF = 1e9 + 5;
signed main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  int N, R;
  cin >> N >> R;
  vector<int> walls[R];
  for (int i = 0; i < R; i++) {
    int k;
    cin >> k;
    walls[i].resize(k + 2);
    walls[i][0] = walls[i][k + 1] = 0;
    for (int j = 1; j <= k; j++)
      cin >> walls[i][j];
  }
  unordered_map<int, int> diff_mp;
  for (int i = 0; i < R; i++) {
 
 
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