Compilare: user.cpp: In function ‘int main()’: user.cpp:49:59: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (dp[i]==y) {nr++;x+=y;s+=(n-y+1)*(n+1);if (nr>1&&x>mx||(x==mx&&(s>smx||rmx<3))) {mx=x;nmx=nr;rmx=3;smx=s;}} ^ user.cpp:58:53: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (ds[i]==y) {nr++;x+=y;s+=(i+1)*y;if (nr>1&&x>mx||(x==mx&&(s>smx||rmx<4))) {mx=x;nmx=nr;rmx=4;smx=s;}} ^ user.cpp:12:24: warning: unused variable ‘xmx’ [-Wunused-variable] long long n,i,j,mx,xmx,nr,nrmx,rmx,x,y,nmx,s,smx; ^ user.cpp:12:31: warning: variable ‘nrmx’ set but not used [-Wunused-but-set-variable] long long n,i,j,mx,xmx,nr,nrmx,rmx,x,y,nmx,s,smx; ^ user.cpp:13:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%lld",&n); ^ user.cpp:17:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%lld",&x); ^