Compilare: user.cpp: In function ‘int main()’: user.cpp:72:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < total_sum.size(); ++i) ^ user.cpp:130:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < total_sum.size(); ++i) ^ user.cpp:148:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k = 0; k < B[i][j].size(); ++k) ^ user.cpp:42:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("triunghi.in", "r", stdin); ^ user.cpp:43:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("triunghi.out", "w", stdout); ^ user.cpp:131:4: warning: ‘max_pos’ may be used uninitialized in this function [-Wmaybe-uninitialized] for (int no_type = 1; no_type <= max_pos; ++no_type) ^