제출 #675199

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
675199		vjudge1	Trampoline (info1cup20_trampoline)	C++17	0 / 100	529 ms	27148 KiB

trampoline

#include<bits/stdc++.h>
using namespace std;
 
#define f first
#define s second
 
typedef long long ll;
typedef long double ld;
 
typedef pair<ll, ll> pt;
 
int r, c, n, t;
 
const int maxn = 2e5+5;
 
const ll inf = 1e9+5;

map<int, vector<pair<int, int>>> mp;
int dd[maxn];

int sp[20][maxn];

void build(){
    for(int i = 1; i < 20; i++){
        for(int j = 1; j <= n; j++){
            sp[i][j] = sp[i-1][sp[i-1][j]];
        }
    }
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin >> r >> c >> n;
    for(int i = 1; i <= n; i++){
        int a, b;
        cin >> a >> b;
        mp[a].push_back({b, i});
        dd[i]=b;
    }
    for(auto it = mp.begin(); it != mp.end(); it++){
        sort(it->s.begin(), it->s.end());
    }
    for(auto v: mp){
        for(auto x: v.s){
            int pos = lower_bound(mp[v.f+1].begin(), mp[v.f+1].end(), make_pair(x.f, 0))-mp[v.f+1].begin();
            if(pos < mp[v.f+1].size())sp[0][x.s] = mp[v.f+1][pos].s;
        }
    }
    build();
    cin >> t;
    while(t--){
        int xs, ys, xt, yt;
        cin >> xs >> ys >> xt >> yt;
        if(ys > yt || xs > xt || xt - xs > n){
            cout << "No\n";
            continue;
        }
        if(xs == xt){
            cout << "Yes\n";
            continue;
        }
        int pos = lower_bound(mp[xs].begin(), mp[xs].end(), make_pair(ys, 0))-mp[xs].begin();
        if(pos == mp[xs].size())cout << "No\n";
        else{
            int crr = mp[xs][pos].s;
            for(int i = 0; i < 20; i++){
                if((1<<i)&(xt-xs))crr = sp[i][crr];
            }
            if(dd[crr] <= yt)cout << "Yes\n";
            else cout << "No\n";
        }
    }
}

컴파일 시 표준 에러 (stderr) 메시지

trampoline.cpp: In function 'int main()':
trampoline.cpp:47:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |             if(pos < mp[v.f+1].size())sp[0][x.s] = mp[v.f+1][pos].s;
      |                ~~~~^~~~~~~~~~~~~~~~~~
trampoline.cpp:64:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |         if(pos == mp[xs].size())cout << "No\n";
      |            ~~~~^~~~~~~~~~~~~~~~

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