Submission #743047

#	Time	Username	Problem	Language	Result	Execution time	Memory
743047		vjudge1	Lasers (NOI19_lasers)	C++17	0 / 100	150 ms	836 KiB

lasers

#include<iostream>

using namespace std;

int arr[10000010],ck;

int main()
{
    ios_base::sync_with_stdio(0),cin.tie(0);
    int n; cin>>n;
    for(int i = 1; i<=n; ++i){
        int x,y; cin>>x>>arr[i];
        if(i>1 && arr[i-1]!=arr[i]){
            ck = 1;
        }
    }
    if(!ck){
        cout<<n;
        return 0;
    }
}

Compilation message (stderr)

lasers.cpp: In function 'int main()':
lasers.cpp:12:15: warning: unused variable 'y' [-Wunused-variable]
   12 |         int x,y; cin>>x>>arr[i];
      |               ^

• Subtask 1: 0 / 10
• Subtask 2: 0 / 14
• Subtask 3: 0 / 20
• Subtask 4: 0 / 21
• Subtask 5: 0 / 22
• Subtask 6: 0 / 13