Compilare: main.cpp: In function 'int main()': main.cpp:16:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i <= m; i++) { ~~^~~~ main.cpp:25:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i <= n; i++) ~~^~~~ main.cpp:33:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (!found && nr_candidates > k) { ~~~~~~~~~~~~~~^~~ main.cpp:35:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i <= n; i++) ~~^~~~ main.cpp:36:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (candidates[i] && d[i] < k) { ~~~~~^~~ main.cpp:40:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 1; j <= n; j++) ~~^~~~ main.cpp:46:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (nr_candidates >= k) ~~~~~~~~~~~~~~^~~~ main.cpp:48:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i <= n; i++) ~~^~~~