/in/foo.cc: In function 'void get_ans()':
/in/foo.cc:107:9: error: expected ';' before 'if'
         if(f[ed][0]==INF) {printf("inf\n");continue;}
         ^~
/in/foo.cc:107:53: warning: statement has no effect [-Wunused-value]
         if(f[ed][0]==INF) {printf("inf\n");continue;}
                                                     ^
/in/foo.cc:97:22: warning: unused variable 'cnt' [-Wunused-variable]
     int q=read();int cnt=0;
                      ^~~