Submission #1531552


Source Code Expand

#include<cstdio>
typedef long long ll;
ll h[110000];
int n,a,b;
int check(ll k)
{
	ll ret=0;
	for(int i=1;i<=n;i++)
	{
		h[i]-=b*k;
		if(h[i]>0) ret+=h[i]%(a-b)==0?h[i]/(a-b):h[i]/(a-b)+1;
		h[i]+=b*k;
	}
	return ret<=k;
}
int main()
{
	ll s=0,ans;
	scanf("%d%d%d",&n,&a,&b);
	for(int i=1;i<=n;i++) scanf("%lld",&h[i]),s+=h[i];
	ll l=1,r=s/a+1;
	while(l<=r)
	{
		ll mid=(l+r)>>1;
		if(check(mid)) ans=mid,r=mid-1;
		else l=mid+1;
	}
	printf("%lld\n",ans);
	return 0;
}

Submission Info

Submission Time
Task D - Widespread
User CXY
Language C++14 (GCC 5.4.1)
Score 0
Code Size 497 Byte
Status WA
Exec Time 39 ms
Memory 896 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:19:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d",&n,&a,&b);
                          ^
./Main.cpp:20:51: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1;i<=n;i++) scanf("%lld",&h[i]),s+=h[i];
                                                   ^

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 400
Status
AC × 3
AC × 12
WA × 1
Set Name Test Cases
Sample a01, a02, a03
All a01, a02, a03, b04, b05, b06, b07, b08, b09, b10, b11, b12, b13
Case Name Status Exec Time Memory
a01 AC 0 ms 128 KB
a02 AC 1 ms 128 KB
a03 AC 0 ms 128 KB
b04 AC 0 ms 128 KB
b05 AC 14 ms 896 KB
b06 AC 39 ms 896 KB
b07 AC 31 ms 896 KB
b08 AC 30 ms 896 KB
b09 AC 16 ms 896 KB
b10 AC 15 ms 896 KB
b11 AC 17 ms 896 KB
b12 AC 17 ms 896 KB
b13 WA 31 ms 896 KB