Submission #691749

#	Time	Username	Problem	Language	Result	Execution time	Memory
691749		Aiperiii	Trampoline (info1cup20_trampoline)	C++14	62 / 100	2037 ms	10900 KiB

trampoline

#include <bits/stdc++.h>
using namespace std;
int main(){
    int r,c,n;
    cin>>r>>c>>n;
    map <int,vector <long long > > mp;
    while(n--){
        int x,y;
        cin>>x>>y;
        mp[x].push_back(y);
    }
    for(auto x : mp){
        vector <long long > vec=x.second;
        sort(vec.begin(),vec.end());
        mp[x.first]=vec;
    }
    int t;
    cin>>t;
    while(t--){
        int x1,x2,y1,y2;
        cin>>x1>>y1>>x2>>y2;
        string ans="Yes";
        if(x1>x2 or y1>y2){
            ans="No";
        }
        int y=y1;
        for(int i=x1;i<x2;i++){
            vector < long long > vec=mp[i];
            vec.insert(vec.begin(),-2e9);
            vec.push_back(2e9);
            long long l=0;
            long long r=vec.size();
            while(r-l>1){
                long long mid=(l+r)/2;
                if(vec[mid]<y){
                    l=mid;
                }
                else{
                    r=mid;
                }
            }
            if(r==vec.size()-1 ){
                ans="No";
                break;
            }
            else {
                y=vec[r];
            }
        }
        if(y>y2){
            ans="No";
        }
        cout<<ans<<endl;
    }
}

Compilation message (stderr)

trampoline.cpp: In function 'int main()':
trampoline.cpp:42:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |             if(r==vec.size()-1 ){
      |                ~^~~~~~~~~~~~~~

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