Compilare: main.cpp: In function 'int main()': main.cpp:16:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = 0; i < K; i++) { ~~^~~ main.cpp:19:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = 1; i < (1 << K); i++) { ~~^~~~~~~~~~ main.cpp:21:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t j = 0; j < K; j++) { ~~^~~ main.cpp:25:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (prod > N) ~~~~~^~~ main.cpp:15:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%lld%lld", &N, &K); ^ main.cpp:17:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%lld", &nums[i]); ^