Compilare: main.cpp: In function 'void PLUS(int, int)': main.cpp:23:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[nod].size(); ++i) { ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void MINUS(int, int)': main.cpp:33:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v1[nod].size(); ++i) { ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void CTC()': main.cpp:58:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int y = 0; y < ctc[k].size() && ok; ++y) { ~~^~~~~~~~~~~~~~~ main.cpp:78:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i1 = 0; i1 < ctc[i].size() && (!muchie[i][j] || !muchie[j][i]); ++i1) { ~~~^~~~~~~~~~~~~~~ main.cpp:79:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j2 = 0; j2 < ctc[j].size() && (!muchie[i][j] || !muchie[j][i]); ++j2) { ~~~^~~~~~~~~~~~~~~ main.cpp: In function 'void sortare_topologica()': main.cpp:108:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < urm[node].size(); ++i) { ~~^~~~~~~~~~~~~~~~~~