Submission #1144957

#	Time	Username	Problem	Language	Result	Execution time	Memory
1144957		KasymK	Trampoline (info1cup20_trampoline)	C++20	23 / 100	317 ms	13212 KiB

trampoline

#include "bits/stdc++.h"
using namespace std;
#define ff first
#define ss second
#define all(v) v.begin(), v.end()
#define ll long long
#define pb push_back
#define pii pair<int, int>
#define pli pair<ll, int>
#define pll pair<ll, ll>
#define tr(i, c) for(auto i = c.begin(); i != c.end(); ++i)
#define wr puts("----------------")
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
const int N = 2e5+5;
vector<int> adj[N];

int main(){
    int r, c, n;
    scanf("%d%d%d", &r, &c, &n);
    vector<int> v;
    vector<pii> A;
    map<int, int> mp;
    for(int i = 0; i < n; ++i){
        int a, b;
        scanf("%d%d", &a, &b);
        A.pb({a, b});
        if(!mp.count(a))
            mp[a]++, v.pb(a);
    }
    int op=-1;
    sort(all(v));
    tr(it, v)
    mp[*it]=++op;
    // tr(it, A)
    // printf("%d %d\n", *it);
    tr(it, A)
    adj[mp[it->ff]].pb(it->ss);
    for(auto i : mp)
        sort(all(adj[i.ff]));
    int q;
    scanf("%d", &q);
    while(q--){
        int x, y, x1, y1;
        scanf("%d%d%d%d", &x, &y, &x1, &y1);
        if(x>x1 or y>y1){
            puts("No");
            continue;
        }
        while(x<x1){
            if(!mp.count(x))
                break;
            if(adj[mp[x]].back()<y)
                break;
            int id=lower_bound(all(adj[mp[x]]), y)-adj[mp[x]].begin();
            y=adj[mp[x]][id], x++;
        }
        puts(x==x1 and y<=y1?"Yes":"No");
    }
    return 0;
}

Compilation message (stderr)

trampoline.cpp: In function 'int main()':
trampoline.cpp:20:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |     scanf("%d%d%d", &r, &c, &n);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~
trampoline.cpp:26:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |         scanf("%d%d", &a, &b);
      |         ~~~~~^~~~~~~~~~~~~~~~
trampoline.cpp:42:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |     scanf("%d", &q);
      |     ~~~~~^~~~~~~~~~
trampoline.cpp:45:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   45 |         scanf("%d%d%d%d", &x, &y, &x1, &y1);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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