Compilare: user.cpp: In function ‘int main()’: user.cpp:27:32: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] dp[i & 1][j] = dp[1 - i & 1][j]; ^ user.cpp:32:22: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] if(dp[1 - i & 1][j - i * cnt] > -1) ^ user.cpp:33:60: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] dp[i & 1][j] = std::max(dp[i & 1][j], dp[1 - i & 1][j - i * cnt] + sum); ^ user.cpp:13:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d %d " ,&n,&g); ^ user.cpp:15:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d %d " ,&w,&p); ^