/in/foo.c: In function 'main':
/in/foo.c:13:2: error: expected ';' before 't'
  t=5;
  ^
/in/foo.c:5:32: warning: variable 'time' set but not used [-Wunused-but-set-variable]
     int n,m,a[10],b[22][3],i,j,time=0,t;
                                ^~~~
/in/foo.c: In function 'dfs':
/in/foo.c:19:12: error: 'm' undeclared (first use in this function)
  for(j=0;j<m;){
            ^
/in/foo.c:19:12: note: each undeclared identifier is reported only once for each function it appears in