View Compilation Error

0_0_31754585_23253.cpp:11:8: error: 'maxn2' was not declared in this scope
 int vl[maxn2],we[maxn2];
        ^
0_0_31754585_23253.cpp:11:18: error: 'maxn2' was not declared in this scope
 int vl[maxn2],we[maxn2];
                  ^
0_0_31754585_23253.cpp: In function 'int main()':
0_0_31754585_23253.cpp:23:9: error: 'vl' was not declared in this scope
    cin>>vl[i];
         ^
0_0_31754585_23253.cpp:25:9: error: 'we' was not declared in this scope
    cin>>we[i];
         ^
0_0_31754585_23253.cpp:28:19: error: 'we' was not declared in this scope
    for(int j=v;j>=we[i];j--)
                   ^
0_0_31754585_23253.cpp:34:26: error: 'vl' was not declared in this scope
      b[l]=dp[j-we[i]][l]+vl[i];
                          ^