Compilare: main.cpp: In function 'bool prim(int)': main.cpp:20:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < p.size(); i++) ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:61:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(g[t][x].size() == n-1) { sol[t][x] = 1; base = x; } ~~~~~~~~~~~~~~~^~~~~~ main.cpp:62:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(inv[t][y].size() == n-1) last = y; ~~~~~~~~~~~~~~~~~^~~~~~ main.cpp:76:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < g[t][cnt].size(); i++) { ~~^~~~~~~~~~~~~~~~~~ main.cpp:97:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int d = 0; d < inv[t][j].size(); d++) { ~~^~~~~~~~~~~~~~~~~~ main.cpp:55:6: warning: 'last' may be used uninitialized in this function [-Wmaybe-uninitialized] int last; int base; ^~~~