Compilare: user.cpp: In function ‘int main()’: user.cpp:19:21: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] if(dp[1 - i & 1][dif + MAXN] == 1) { ^ user.cpp:12:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d %d " ,&n,&k); ^ user.cpp:17:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&len); ^