Compilare: main.cpp: In function 'bool b_ford()': main.cpp:45:1: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for (i=1; i<=n; i++) cmin[i]=INF; cmin[start]=0; ^~~ main.cpp:45:35: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for (i=1; i<=n; i++) cmin[i]=INF; cmin[start]=0; ^~~~ main.cpp:50:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<G[vf].size(); i++) ~^~~~~~~~~~~~~