Compilare: main.cpp: In function 'int getminim()': main.cpp:34:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = 0; i < n; i++) ~~^~~ main.cpp: In function 'int main()': main.cpp:51:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = 0; i < n; i++) ~~^~~ main.cpp:60:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = 0; i < n; i++) ~~^~~ main.cpp:66:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t j = 0; j < n; j++) ~~^~~ main.cpp:68:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (vertex == j) ~~~~~~~^~~~ main.cpp:88:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = 0; i < n; i++) ~~^~~ main.cpp: In function 'int getminim()': main.cpp:42:9: warning: 'index' may be used uninitialized in this function [-Wmaybe-uninitialized] return index; ^~~~~