Compilare: user.cpp: In function ‘void BellmanFord()’: user.cpp:34:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[1].size();i++){ ^ user.cpp:44:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod].size();i++){ ^ user.cpp:30:13: warning: unused variable ‘j’ [-Wunused-variable] long int i, j, k1=1, k2=0, nod, nodv, costv; ^ user.cpp:30:33: warning: unused variable ‘nodv’ [-Wunused-variable] long int i, j, k1=1, k2=0, nod, nodv, costv; ^ user.cpp:30:39: warning: unused variable ‘costv’ [-Wunused-variable] long int i, j, k1=1, k2=0, nod, nodv, costv; ^ user.cpp: In function ‘void Citire()’: user.cpp:20:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%ld %ld\n",&N,&M); ^ user.cpp:22:43: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%ld %ld %ld\n",&x,&y,&z); ^