Compilare: main.cpp: In function 'void BKT(int)': main.cpp:16:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ind=0;ind<pos.size();ind++) ~~~^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:36:33: warning: unused variable 'j' [-Wunused-variable] int n,m,act,vmax,va,x,y,k,i,j,ind,ans,nra,nrb; ^ main.cpp:36:43: warning: unused variable 'nra' [-Wunused-variable] int n,m,act,vmax,va,x,y,k,i,j,ind,ans,nra,nrb; ^~~ main.cpp:36:47: warning: unused variable 'nrb' [-Wunused-variable] int n,m,act,vmax,va,x,y,k,i,j,ind,ans,nra,nrb; ^~~ main.cpp:38:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("pavare.in","r",stdin); ^ main.cpp:39:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("pavare.out","w",stdout); ^ main.cpp:40:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&n,&m,&k); ^ main.cpp:45:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^