View Compilation Error

0_0_32853415_3669.cpp: In function 'int main()':
0_0_32853415_3669.cpp:38:11: error: 't' was not declared in this scope
     while(t--)
           ^
0_0_32853415_3669.cpp:41:38: error: 'm' was not declared in this scope
         scanf("%lld%lld%lld%lld",&a,&m,&n,&k);
                                      ^