Compilare: main.cpp: In function 'int main()': main.cpp:74:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(register int i=0;i<v1.size()&&nr<n-1;i++) ~^~~~~~~~~~ main.cpp:47:18: warning: unused variable 'tip' [-Wunused-variable] int n1,n,x,y,tip,xx,yy,m,cost,nr; ^~~ main.cpp:47:22: warning: unused variable 'xx' [-Wunused-variable] int n1,n,x,y,tip,xx,yy,m,cost,nr; ^~ main.cpp:47:25: warning: unused variable 'yy' [-Wunused-variable] int n1,n,x,y,tip,xx,yy,m,cost,nr; ^~ main.cpp:47:28: warning: variable 'm' set but not used [-Wunused-but-set-variable] int n1,n,x,y,tip,xx,yy,m,cost,nr; ^ main.cpp:47:30: warning: unused variable 'cost' [-Wunused-variable] int n1,n,x,y,tip,xx,yy,m,cost,nr; ^~~~ main.cpp:45:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("desen.in","r",stdin); ^ main.cpp:46:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("desen.out","w",stdout); ^ main.cpp:49:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n1); ^ main.cpp:52:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^