Compilare: main.cpp: In function 'int main()': main.cpp:17:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = 1; i <= n; i++) ~~^~~~ main.cpp:23:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = 1; i <= n; i++) ~~^~~~ main.cpp:25:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t j = 1; j <= g; j++) ~~^~~~ main.cpp:29:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (energy[i] <= j) ~~~~~~~~~~^~~~