Submission #1533708

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Source Code Expand

#include<cstdio>
typedef long long ll;
ll s[210000],t[210000];
ll mergesort(int l,int r)
{
	if(l==r) return 0;
	int mid=(l+r)>>1;
	ll ret=mergesort(l,mid)+mergesort(mid+1,r);
	int i=l,j=mid+1,k=l;
	while(i<=mid&&j<=r)
		if(s[i]>s[j]) t[k++]=s[i++];
		else {t[k++]=s[j++];ret+=(mid-i+1);}
	while(i<=mid) t[k++]=s[i++];
	while(j<=r) t[k++]=s[j++];
	for(int i=l;i<=r;i++) s[i]=t[i];
	return ret;
}
int main()
{
	int n,k;
	scanf("%d%d",&n,&k);
	for(int i=1;i<=n;i++)
	{
		ll x;scanf("%lld",&x);
		x-=k;
		s[i]=s[i-1]+x;
	}
	ll ans=mergesort(0,n);
	printf("%lld\n",ans);
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:21:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&k);
                     ^
./Main.cpp:24:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   ll x;scanf("%lld",&x);
                        ^

Judge Result