Compilare: user.cpp: In function ‘int main()’: user.cpp:29:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i < n_int.size() && j < n_ext.size()) ^ user.cpp:29:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i < n_int.size() && j < n_ext.size()) ^ user.cpp:51:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < sol.size(); i++) ^ user.cpp:11:47: warning: unused variable ‘nrsol’ [-Wunused-variable] int n, m, inter[N], exter[N], i, j, a, b, nrsol = 0, val; ^ user.cpp:15:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1, "%d%d", &n, &m); ^ user.cpp:18:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1, "%d%d", &a, &b); ^