Compilare: user.cpp: In function ‘int main()’: user.cpp:12:19: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if(i&1==j&1) ^ user.cpp:6:19: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^ user.cpp:6:19: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:6:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:8:138: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d%d",&a,&b,&e,&f,&g,&h),i=(e<g?(g-e):(e-g)),j=(f<h?(h-f):(f-h)),c=e<g?e:g,d=f<h?f:h,m=e<g?g:e,n=f<h?h:f,k=i<j?i:j; ^