graf.cpp: In function `void rezolvare()': graf.cpp:19: warning: comparison between signed and unsigned integer expressions graf.cpp:21: warning: comparison between signed and unsigned integer expressions graf.cpp:24: warning: comparison between signed and unsigned integer expressions graf.cpp:31: warning: comparison between signed and unsigned integer expressions graf.cpp:32: warning: comparison between signed and unsigned integer expressions graf.cpp: In function `int main()': graf.cpp:71: warning: comparison between signed and unsigned integer expressions