Compilare: main.cpp: In function 'void rec(int)': main.cpp:12:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 2; i <= n; i++) { ~~^~~~ main.cpp:14:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (k[i][col] >= nr) { ///se bifurca drumul, in fct de nr de drumuri al fiecaruia aleg main.cpp: In function 'int main()': main.cpp:39:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i <= n + 1; i++) { ~~^~~~~~~~ main.cpp:43:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i <= n; i++) { ~~^~~~ main.cpp:48:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i <= n; i++) { ~~^~~~