teams.cpp: In function 'int can(int, int*)':
teams.cpp:24:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if(que.size()<x)return 0;
~~~~~~~~~~^~
teams.cpp:25:7: warning: declaration of 'i' shadows a previous local [-Wshadow]
rep(i,x)que.pop();
^
teams.cpp:3:25: note: in definition of macro 'rep'
#define rep(i,n)for(int i=0;i<(n);i++)
^
teams.cpp:20:6: note: shadowed declaration is here
rep(i,M){
^
teams.cpp:3:25: note: in definition of macro 'rep'
#define rep(i,n)for(int i=0;i<(n);i++)
^