Compilare: main.cpp: In function 'int main()': main.cpp:85:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<g[i].size();j++){ ~^~~~~~~~~~~~ main.cpp:76:17: warning: unused variable 'cnt' [-Wunused-variable] int x,y,cnt=0,maxim=0,nrmaxim=0; ^~~ main.cpp:93:20: warning: iteration 31202 invokes undefined behavior [-Waggressive-loop-optimizations] dist[i]=-1; ~~~~~~~^~~ main.cpp:92:22: note: within this loop for(int i=1;i<=NMAX;i++) ~^~~~~~