Compilare: user.cpp: In function ‘int main()’: user.cpp:39:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (poz[i] < v[i].size () && v[i][poz[i]] <= nr) { ~~~~~~~^~~~~~~~~~~~~~ user.cpp:23:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d%d", &n, &q); ^ user.cpp:26:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d", &k); ^ user.cpp:28:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d", &a); ^ user.cpp:34:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d%d", &x[i], &y[i]); ^