Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
142398 李茗宇 18第一次出现与最后一次出现的位置 C++ Compile Error 0 MS 0 KB 617 2026-01-07 19:49:02

Tests(0/0):

Code:

#include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ int n,l=0,f=0,r=0,y; cin>>n; int a[n+1]; for(int i=1;i<=n;i++){ cin>>a[i]; } cin>>y; for(int i=1;i<=n;i++){ if(a[i]==y){ l=i; f=1; break; } } if(f==0){ cout<<-1; return 0; } for(int i=n;i>=1;i--){ if(a[i]==y){ r=i; break; } } cout<<l<<' '<<r; return 0; }

Run Info:

Main.cc: In function 'int main()':
Main.cc:7:5: error: 'cin' was not declared in this scope
     cin>>n;
     ^
Main.cc:21:9: error: 'cout' was not declared in this scope
         cout<<-1;
         ^
Main.cc:30:1: error: 'cout' was not declared in this scope
 cout<