answer.code: In function ‘int main()’:
answer.code:93:21: error: ‘t’ was not declared in this scope; did you mean ‘tm’?
   93 |         scanf("%d",&t);
      |                     ^
      |                     tm
answer.code: In function ‘void solve()’:
answer.code:55:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   55 |         scanf("%d%d",&n,&m);
      |         ~~~~~^~~~~~~~~~~~~~
answer.code:64:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   64 |                 scanf("%d%d",&u,&v);
      |                 ~~~~~^~~~~~~~~~~~~~