Compilare: user.cpp: In function ‘int bf()’: user.cpp:26:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<l[x].size();i++) ^ user.cpp: In function ‘void dinic()’: user.cpp:48:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<l[d].size();i++) ^ user.cpp: In function ‘void bfs(int, int)’: user.cpp:76:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<l[x].size();i++) ^ user.cpp:70:13: warning: unused variable ‘h’ [-Wunused-variable] int i,j,h; ^ user.cpp: In function ‘int main()’: user.cpp:89:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,x,y,m; ^ user.cpp:90:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fo,"%d %d",&n,&m); ^ user.cpp:94:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fo,"%d %d",&x,&y); ^ user.cpp:97:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fo,"%d",&c[x][y]); ^