Compilare: user.cpp: In function ‘int main()’: user.cpp:44:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i < m.size() && j < d.size()) ^ user.cpp:44:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i < m.size() && j < d.size()) ^ user.cpp:21:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1, "%d%d", &k, &n); ^ user.cpp:24:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1, "%d%d", &a, &b); ^ user.cpp:30:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1, "%d", &mb); ^ user.cpp:33:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1, "%d%d", &a, &b); ^