Compilare: main.cpp: In function 'bool bfs(int, int)': main.cpp:20:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[pz].size();++i) ~^~~~~~~~~~~~~ main.cpp: In function 'int dfs(int, int, int)': main.cpp:34:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[pz].size();++i) ~^~~~~~~~~~~~~ main.cpp: In function 'int maxflow(int, int)': main.cpp:58:33: warning: suggest parentheses around assignment used as truth value [-Wparentheses] while(cur=dfs(S,D,200003)) ^ main.cpp: In function 'int main()': main.cpp:69:11: warning: unused variable 'j' [-Wunused-variable] int i,j,m,k=0; ^ main.cpp:69:15: warning: unused variable 'k' [-Wunused-variable] int i,j,m,k=0; ^