Compilare: main.cpp: In function 'int main()': main.cpp:33:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (j < w.size() && w[j] <= v[i]) { ~~^~~~~~~~~~ main.cpp:7:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("portofel.in", "r", stdin); ^ main.cpp:8:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("portofel.out", "w", stdout); ^