Submission #743169

#	Time	Username	Problem	Language	Result	Execution time	Memory
743169		vjudge1	Lightning Rod (NOI18_lightningrod)	C++17	0 / 100	2082 ms	174636 KiB

Main

#include <bits/stdc++.h>
#define x first
#define y second
using namespace std;
const int N = 1e7 + 1;
pair<int,int> arr[N];
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);
    int n,ans=0; cin >> n;
    for(int i=1;i<=n;i++) cin >> arr[i].x >> arr[i].y;
    set<int> s;
    for(int i=1;i<=n;i++) s.insert(arr[i].x);
    cout << s.size();
    return 0;
}

Compilation message (stderr)

lightningrod.cpp: In function 'int main()':
lightningrod.cpp:10:11: warning: unused variable 'ans' [-Wunused-variable]
   10 |     int n,ans=0; cin >> n;
      |           ^~~

• Subtask 1: 0 / 4
• Subtask 2: 0 / 7
• Subtask 3: 0 / 12
• Subtask 4: 0 / 21
• Subtask 5: 0 / 26
• Subtask 6: 0 / 10
• Subtask 7: 0 / 20