597B codeforcess - Restaurant

597B codeforces - Restaurant

Link ; http://codeforces.com/contest/597/problem/B

Solution in C++

#include <bits/stdc++.h>

using namespace std;

typedef long long int lli;

#define pii pair<int,int>

int n,sol,t1,t2;

vector<pair<int,int> > all;

int main()

{

    ios::sync_with_stdio(0);

    cin.tie(0);cout.tie(0);

    cin>>n;

    while(n--)

    {

        cin>>t1>>t2;

        all.push_back({t2,t1});

    }

    sort(all.begin(),all.end());

    int las=0;

    for(auto u : all)

    {

        if(u.second>las)sol++,las=u.first;

    }

    cout<<sol;

    return 0;

}

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About Mohamed Sobhi

My name is Mo.Sobhy ,I study at School excelling high school in Ain Shams ,Cairo
My hobbies is programming ,and web development ,playing chess and writing horror stories.