Submission #525460

#	Time	Username	Problem	Language	Result	Execution time	Memory
525460		scwadr	Trampoline (info1cup20_trampoline)	C++17	0 / 100	1417 ms	9784 KiB

trampoline

#include <bits/stdc++.h>

using namespace std;

map<int, vector<int>> mp;
int xf, yf, xs, ys;
int yyy;

bool wae(int x, int y)
{
    if(xf<x || yf<y)
    {
        if(x==xs)
            cout<<"1\n";
        return 0;
    }
    else if(xf==x) return 1;
    else
    {
        yyy=lower_bound(mp[x].begin(), mp[x].end(), y)-mp[x].begin();
        //cout<<x<<' '<<yyy<<' '<<mp[x][yyy]<<'\n';
        if(yyy==mp[x].size())
        {
            //cout<<"2\n";
            return false;
        }
        else return wae(x+1, mp[x][yyy]);
    }
}

int main()
{
    int r, c, n ,t;
    cin>>r>>c>>n;
    for(int i=0; i<n; i++)
    {
        int x, y;
        cin>>x>>y;
        mp[x].push_back(y);
    }
    for(auto i : mp)
    {
        sort(i.second.begin(), i.second.end());
    }
    cin>>t;
    while(t--)
    {
        cin>>xs>>ys>>xf>>yf;
        if(xf-xs>n) cout<<"No\n";
        else if(wae(xs, ys))    cout<<"Yes\n";
        else cout<<"No\n";
    }
    return 0;
}

Compilation message (stderr)

trampoline.cpp: In function 'bool wae(int, int)':
trampoline.cpp:22:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |         if(yyy==mp[x].size())
      |            ~~~^~~~~~~~~~~~~~

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