Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
131039 鲁博睿 18第一次出现与最后一次出现的位置 C++ Compile Error 0 MS 0 KB 403 2025-09-20 17:12:02

Tests(0/0):

Code:

#include <bits/stdc++.h> using namespace std; int a[10000001]; int main(){ int n,m,js,ks-1; cin>>n; for(int i=1;i<=n;i++){ cin>>a[i]; } cin>>m; for(int i=1;i<=n;i++){ if(a[i]==m){ ks = i; break; } } for(int i=n;i>0;i--){ if(a[i]==m){ js = i; break; } } if(ks != -1){ cout<<ks<<" "<<js<<endl; } else{ cout<<-1; } return 0; }

Run Info:

Main.cc: In function 'int main()':
Main.cc:5:15: error: expected initializer before '-' token
  int n,m,js,ks-1;
               ^
Main.cc:13:4: error: 'ks' was not declared in this scope
    ks = i;
    ^
Main.cc:23:5: error: 'ks' was not declared in this scope
  if(ks != -1){
     ^