/in/foo.cc: In function 'void _init()':
/in/foo.cc:19:18: warning: unused variable 'las' [-Wunused-variable]
     for (int i=1,las=0; i<=n; i++) {
                  ^~~
/in/foo.cc: In function 'void pend(int, int)':
/in/foo.cc:45:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
         for (int i=1; i<=a[x].cnt; i++) used[i]=rounds; a[x].equip=0;
         ^~~
/in/foo.cc:45:57: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
         for (int i=1; i<=a[x].cnt; i++) used[i]=rounds; a[x].equip=0;
                                                         ^
/in/foo.cc: In function 'bool dis_cards(int)':
/in/foo.cc:218:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
         for (int i=1; i<=counts; i++) a[cur].cards[i]=tmp[i]; a[cur].cnt=counts;
         ^~~
/in/foo.cc:218:63: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
         for (int i=1; i<=counts; i++) a[cur].cards[i]=tmp[i]; a[cur].cnt=counts;
                                                               ^