Compilare: user.cpp: In function ‘void DP()’: user.cpp:47:20: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (j + 2 <= N && P[j + 2] == 0 || P[j + 2] == 3) ^ user.cpp: In function ‘int main()’: user.cpp:72:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0;i<pos.size();++i) ^ user.cpp:65:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &N, &M); ^ user.cpp:68:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &P[i]); ^ user.cpp:73:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &T[pos[i]]); ^ user.cpp:77:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &j,&k); ^