View Compilation Error

0_0_29196041_26385.cpp: In function 'int main()':
0_0_29196041_26385.cpp:8:17: error: 'T' was not declared in this scope
     scanf("%d",&T);
                 ^
0_0_29196041_26385.cpp:10:23: error: 'n' was not declared in this scope
         scanf("%d%d",&n,&m);
                       ^
0_0_29196041_26385.cpp:10:26: error: 'm' was not declared in this scope
         scanf("%d%d",&n,&m);
                          ^