Submission #1008849

#TimeUsernameProblemLanguageResultExecution timeMemory
1008849PenguinsAreCuteTrampoline (info1cup20_trampoline)C++17
62 / 100
2075 ms62652 KiB
#include <bits/stdc++.h>
using namespace std;
#define int long long
const int MAXN = 420690;
const int INF = 1210201069;
vector<pair<int,int>> seg[MAXN<<1];
int f(int i, int x) {
  return (*lower_bound(seg[i].begin(),seg[i].end(),make_pair(x,0LL))).second;
}
void build() {
  for(int i=MAXN;i--;)
    for(auto [j, k]: seg[i<<1])
      seg[i].push_back({j,f(i<<1|1,k)});
}
int qry(int l, int r, int x) {
  stack<int> st;
  for(l+=MAXN,r+=MAXN;l<r;l>>=1,r>>=1) {
    if(l&1) x=f(l++,x);
    if(r&1) st.push(--r);
  }
  while(st.size()) {
    x=f(st.top(),x);
    st.pop();
  }
  return x;
}
main() {
  ios_base::sync_with_stdio(0); cin.tie(0);
  int r, c, n; cin >> r >> c >> n;
  vector<int> v; int x[n], y[n];
  for(int i=0;i<n;i++) {
    cin >> x[i] >> y[i];
    v.push_back(x[i]);
    v.push_back(x[i]+1);
  }

  sort(v.begin(),v.end());
  v.resize(unique(v.begin(),v.end())-v.begin());
  for(int i=0;i<n;i++)
    x[i]=lower_bound(v.begin(),v.end(),x[i])-v.begin();
  for(int i=0;i<n;i++)
    seg[x[i]+MAXN].push_back({y[i],y[i]});
  for(int i=0;i<n;i++)
    sort(seg[x[i]+MAXN].begin(),seg[x[i]+MAXN].end());
  for(int i=0;i<MAXN;i++)
    seg[i+MAXN].push_back({INF,INF});
  build();

  int t; cin >> t;
  while(t--) {
    int x1, y1, x2, y2;
    cin >> x1 >> y1 >> x2 >> y2;
    if(x1==x2) {
      cout << (y1<=y2?"Yes\n":"No\n");
      continue;
    }
    if(x1>x2) {
      cout << "No\n";
      continue;
    }
    auto it1 = lower_bound(v.begin(),v.end(),x1);
    auto it2 = lower_bound(v.begin(),v.end(),x2);
    if(it1==v.end()||it2==v.end()||(*it1)!=x1||(*it2)!=x2) {
      cout << "No\n";
      continue;
    }
    cout << (qry(it1-v.begin(),it2-v.begin(),y1)<=y2?"Yes\n":"No\n");
  }
} // noice

Compilation message (stderr)

trampoline.cpp:27:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   27 | main() {
      | ^~~~
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...