Submission #926604

#TimeUsernameProblemLanguageResultExecution timeMemory
926604De3b0oAdvertisement 2 (JOI23_ho_t2)C++14
10 / 100
367 ms38228 KiB
#include<bits/stdc++.h>
#define ll long long
#define F first
#define S second
#define in insert
#define er erase
#define pb push_back
#define ppb pop_back()
#define ph push
#define pp pop()
#define d3 ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define cans cout << ans << "\n";
#define yes cout << "YES" << "\n";
#define no cout << "NO" << "\n";
#define pll pair<ll,ll>
#define lin cout << "\n";
#define sqr 340
#define mod 1000000007

using namespace std;

int main()
{
    d3
    ll n;
    cin >> n;
    map<ll,ll> mp;
    for(int i = 0 ; n>i ; i++)
    {
        ll x, e;
        cin >> x >> e;
        mp[x]++;
    }
    cout << mp.size();
}
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