View Compilation Error

0_0_28712231_26093.cpp: In function 'int main()':
0_0_28712231_26093.cpp:47:9: error: expected initializer before 'v'
   int u v;
         ^
0_0_28712231_26093.cpp:52:19: error: 'u' was not declared in this scope
    scanf("%d %d",&u,&v);
                   ^
0_0_28712231_26093.cpp:52:22: error: 'v' was not declared in this scope
    scanf("%d %d",&u,&v);
                      ^
0_0_28712231_26093.cpp:77:17: error: 'ans' was not declared in this scope
   printf("%d\n",ans);
                 ^