View Compilation Error

0_0_20734996_30243.cpp: In function 'int main()':
0_0_20734996_30243.cpp:15:2: error: expected initializer before 'scanf'
  scanf("%d",&t);
  ^
0_0_20734996_30243.cpp:19:20: error: 'm' was not declared in this scope
   scanf("%d%d",&n,&m);
                    ^