View Compilation Error

0_0_37751772_24333.cpp: In function 'int main()':
0_0_37751772_24333.cpp:26:17: error: 't' was not declared in this scope
     scanf("%d",&t);
                 ^
0_0_37751772_24333.cpp:47:23: error: 'maxn' was not declared in this scope
         for(int i=0;i<maxn;i++){
                       ^