제출 #743047

#제출 시각아이디문제언어결과실행 시간메모리
743047vjudge1Lasers (NOI19_lasers)C++17
0 / 100
150 ms836 KiB
#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; } }

컴파일 시 표준 에러 (stderr) 메시지

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