Compilare: user.cpp: In function ‘void calc(int)’: user.cpp:28:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[h].size (); ++i) ^ user.cpp: In function ‘int main()’: user.cpp:70:47: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("cumainilecurate.in", "r", stdin); ^ user.cpp:71:49: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("cumainilecurate.out", "w", stdout); ^ user.cpp: In function ‘void get(int&)’: user.cpp:135:51: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread (buffer, 1, NMAX, stdin), bufpoz = 0; ^ user.cpp:143:55: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread (buffer, 1, NMAX, stdin), bufpoz = 0; ^ user.cpp:150:55: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread (buffer, 1, NMAX, stdin), bufpoz = 0; ^