Submission #992037

#	Time	Username	Problem	Language	Result	Execution time	Memory
992037		ramalzaher	Trampoline (info1cup20_trampoline)	C++14	11 / 100	2067 ms	28240 KiB

trampoline

#include <bits/stdc++.h>
#define ll long long  
#define sz size()
#define pb push_back
#define all(x) x.begin() , x.end()
using namespace std;
bool check(vector<int> &a){
	for (int i = 0; i < a.size()-1 ; i++)
	{
		if(a[i] > a[i+1] ) return 0  ; 
	}
	
	return 1 ;
	}
int main()
{
	int r , c , n ; cin >> r >>c >> n ;
	map<int,set<int>>mp; 
	for (int i = 0; i < n; i++)
	{
		int a, b ; cin >> a >> b; 
		mp[a].insert(b) ; 
	}
	int t ; cin >> t; 
	for (int i = 0; i < t; i++)
	{
		vector<int> v ; bool ok= 0 ; 
		int sx , sy  , ex , ey ; cin >> sx >> sy >> ex >> ey; 
		v.pb(sy);
		for(int j = sx ; j < ex ; j ++ ){
			auto itt = mp[j].lower_bound(sy) ; 
			if(itt==mp[j].end()) { v.pb(-1);ok=1; break ; }
			v.pb(*itt) ; 
			sy = *itt ; 
			//cout<<sy<<" " ; 
			}
			v.pb(ey);
			//for(auto it : v)cout<<it<<" ";//cout<<endl; 
			if(check(v)&&ok==0)cout<<"Yes\n"; else cout<<"No\n"; 
	}
	


  return 0;
}

Compilation message (stderr)

trampoline.cpp: In function 'bool check(std::vector<int>&)':
trampoline.cpp:8:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |  for (int i = 0; i < a.size()-1 ; i++)
      |                  ~~^~~~~~~~~~~~

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