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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#691287 | #9529. Farm Management | huangce | WA | 1ms | 5708kb | C++17 | 2.3kb | 2024-10-31 10:44:30 | 2024-10-31 10:44:31 |
Judging History
answer
/*
* @Author: dsaDadas11
* @Date: 2024-06-27 10:33:26
* @LastEditTime: 2024-10-31 10:44:17
* @Description: go for it!
*/
#include<bits/stdc++.h>
#define endl '\n'
#define ll long long
#define int ll
using namespace std;
constexpr int N=1e6+7;
constexpr int M=2e3+7;
int n,m;
struct op
{
int w,l,r;
bool operator<(const op&rhs) const
{
return w<rhs.w;
}
}a[N];
int suf[N]; // 区间后缀
int sufval[N];
int tmp,ans;
bool check(int x,int mx,int pos)
{
if(x<=pos)
{
if(suf[x]-(a[pos].r-a[pos].l)>=mx) return 1;
return 0;
}
else
{
if(suf[x]>=mx) return 1;
return 0;
}
}
// bool check2(int x,int mx,int pos)
// {
// if(x<=pos)
// {
// if(suf[x]+(a[pos].r-a[pos].l)>=mx) return 1;
// return 0;
// }
// else
// {
// if(suf[x]>=mx) return 1;
// return 0;
// }
// }
void solve()
{
cin>>n>>m;
for(int i=1;i<=n;i++)
{
cin>>a[i].w>>a[i].l>>a[i].r;
}
sort(a+1,a+1+n);
for(int i=1;i<=n;i++)
{
tmp+=a[i].w*a[i].l;
m-=a[i].l;
}
for(int i=n;i>=1;i--)
{
suf[i]=suf[i+1]+(a[i].r-a[i].l);
sufval[i]=sufval[i+1]+a[i].w*(a[i].r-a[i].l);
}
// 遍历每一个点,二分
for(int i=1;i<=n;i++)
{
int res=tmp;
res-=a[i].w*a[i].l;
int mx=m;
mx+=a[i].l;
// 将第i个点全都去掉
int l=1,r=n;
while(l<r)
{
int mid=(l+r)>>1;
if(check(mid,mx,i)) l=mid+1;
else r=mid;
}
if(l<=i)
{
res+=sufval[l]-a[i].w*(a[i].r-a[i].l);
mx-=suf[l]-(a[i].r-a[i].l);
}
else
{
res+=sufval[l];
mx-=suf[l];
}
if(mx>0)
{
if(l-1>=1) res+=a[l-1].w*mx;
else res+=a[i].w*mx;
}
ans=max(ans,res);
// 全取第i个点
res=tmp;
mx=m;
if(mx<=a[i].r-a[i].l)
{
res+=a[i].w*mx;
ans=max(ans,res);
break;
}
mx-=(a[i].r-a[i].l);
res+=a[i].w*(a[i].r-a[i].l);
l=1,r=n;
while(l<r)
{
int mid=(l+r)>>1;
if(check(mid,mx,i)) l=mid+1;
else r=mid;
}
if(l<=i)
{
res+=sufval[l]-a[i].w*(a[i].r-a[i].l);
mx-=suf[l]-(a[i].r-a[i].l);
}
else
{
res+=sufval[l];
mx-=suf[l];
}
if(mx>0)
{
res+=a[l-1].w*mx;
}
ans=max(ans,res);
}
cout<<ans<<endl;
}
signed main()
{
ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
int T=1; //cin>>T;
while(T--){solve();}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 5640kb
input:
5 17 2 3 4 6 1 5 8 2 4 4 3 3 7 5 5
output:
109
result:
ok single line: '109'
Test #2:
score: -100
Wrong Answer
time: 1ms
memory: 5708kb
input:
12 62 503792 9 10 607358 1 3 600501 10 10 33249 4 4 774438 6 6 197692 3 6 495807 8 8 790225 5 9 77272 3 8 494819 4 9 894779 3 9 306279 5 6
output:
36232275
result:
wrong answer 1st lines differ - expected: '35204500', found: '36232275'