Compilare: user.cpp: In function ‘bool cmp(const std::pair<int, int>&, const std::pair<int, int>&)’: user.cpp:98:63: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = x.second, j = y.second; i < dp[x.first].size() and j < dp[y.first].size(); ++i, ++j) ^ user.cpp:98:90: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = x.second, j = y.second; i < dp[x.first].size() and j < dp[y.first].size(); ++i, ++j) ^ user.cpp: In function ‘int main()’: user.cpp:189:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (sta[i] == mov[i].size() or !oki[i]) ^ user.cpp: In member function ‘void InputReader::advance()’: user.cpp:13:57: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer, SIZE, sizeof(char), inputFile); ^ user.cpp: In constructor ‘InputReader::InputReader(const char*)’: user.cpp:23:42: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer, SIZE, 1, inputFile); ^