Submission #1231814

#	Time	Username	Problem	Language	Result	Execution time	Memory
1231814		Solikha	Trampoline (info1cup20_trampoline)	C++20	0 / 100	1303 ms	1114112 KiB

trampoline

#include "bits/stdc++.h"
using namespace std;
#define int long long
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define ss second
#define ff first
#define pb push_back 

void solve(){
  int r, c, n; cin >> r >> c >> n;
  map<int, set<int>> xy;
  vector<int> comp;
  for(int i = 0; i < n; i++){
    int a, b; cin >> a >> b;
    xy[a].insert(b);
    comp.pb(a);
  }

  sort(all(comp));
  vector<set<int>> nw(n);
  for(int i = 0; i < n; i ++){
    nw[i] = xy[comp[i]];
  }

  auto ans = [&](int x, int y, int xx, int yy) -> bool{
    if(x > xx || y > yy) return false;
    if(x == xx) return true;
    int a = lower_bound(all(comp), x) - comp.begin();
    int b = lower_bound(all(comp), xx) - comp.begin();
    if(comp[a] != x) return false;
    if(xx - x != b - a) return false;
    for(; a < b; a++){
      if(nw[a].empty()) return false;
      auto it = nw[a].lower_bound(y);
      if(it == nw[a].end()) return false;
      if(*it > yy) return false;
      if(comp[a] >= xx) break;
      y = *it;
    }
    return true;
  };

  int t; cin >> t;
  while(t--){
    int x, y, xx, yy; cin >> x >> y >> xx >> yy;
    cout << (ans(x, y, xx, yy) ? "Yes" : "No") << endl;
  }
}
 
signed main() {
  cin.tie(nullptr)->sync_with_stdio(false);
  int t = 1; //cin >> t;
  while(t--){
    solve();
    cout << endl;
  }
  return 0;
}

• Subtask 1: 0 / 23
• Subtask 2: 0 / 20
• Subtask 3: 0 / 11
• Subtask 4: 0 / 19
• Subtask 5: 0 / 27