foo.cc: In function 'int main()':
foo.cc:49:11: error: a function-definition is not allowed here before '{' token
 int main(){
           ^
foo.cc:48:5: warning: unused variable 'a' [-Wunused-variable]
 int a[10000],b[10000],k=0,l=0,n,m; 
     ^
foo.cc:48:14: warning: unused variable 'b' [-Wunused-variable]
 int a[10000],b[10000],k=0,l=0,n,m; 
              ^
foo.cc:48:23: warning: unused variable 'k' [-Wunused-variable]
 int a[10000],b[10000],k=0,l=0,n,m; 
                       ^
foo.cc:48:27: warning: unused variable 'l' [-Wunused-variable]
 int a[10000],b[10000],k=0,l=0,n,m; 
                           ^
foo.cc:48:31: warning: unused variable 'n' [-Wunused-variable]
 int a[10000],b[10000],k=0,l=0,n,m; 
                               ^
foo.cc:48:33: warning: unused variable 'm' [-Wunused-variable]
 int a[10000],b[10000],k=0,l=0,n,m; 
                                 ^
foo.cc:137:1: error: expected '}' at end of input
 }
 ^

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