Compilare: user.cpp: In function ‘void dij()’: user.cpp:34:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<l[x].size();i++) ^ user.cpp: In function ‘int drum(int, int)’: user.cpp:52:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,p,val=inf,y; ^ user.cpp:52:13: warning: unused variable ‘p’ [-Wunused-variable] int i,j,p,val=inf,y; ^ user.cpp:52:23: warning: unused variable ‘y’ [-Wunused-variable] int i,j,p,val=inf,y; ^ user.cpp: In function ‘int main()’: user.cpp:97:26: warning: suggest parentheses around arithmetic in operand of ‘^’ [-Wparentheses] x=drum((1<<(k+1))-1 xor 1<<i,i)+a[1][v[i]]; ^ user.cpp:68:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,m,x,y,mini=inf; muc aux; ^ user.cpp:69:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&n,&m); ^ user.cpp:70:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&k); ^ user.cpp:72:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&v[i]); ^ user.cpp:75:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&x,&y,&aux.c); ^