Compilare: user.cpp: In function ‘int main()’: user.cpp:98:50: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k = 0; k < v[j + 1].size(); k++) ^ user.cpp: In function ‘int getInt()’: user.cpp:24:67: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(++cnt >= buffer) fread(buff, buffer, 1, stdin), cnt = 0; ^ user.cpp:28:67: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(++cnt >= buffer) fread(buff, buffer, 1, stdin), cnt = 0; ^ user.cpp: In function ‘int main()’: user.cpp:41:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("albine.in", "r", stdin); ^ user.cpp:42:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("albine.out", "w", stdout); ^