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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#715264#9529. Farm Managementucup-team5271#ML 1ms5716kbC++172.3kb2024-11-06 11:10:082024-11-06 11:10:08

Judging History

你现在查看的是最新测评结果

  • [2024-11-06 11:10:08]
  • 评测
  • 测评结果:ML
  • 用时:1ms
  • 内存:5716kb
  • [2024-11-06 11:10:08]
  • 提交

answer

#include<bits/stdc++.h>
#define int long long
using namespace std;
typedef pair<int,int> pii;
mt19937 Rnd(time(0));
typedef struct{
  int l,r,w;
}AD;
bool cmp(AD A,AD B)
{
  return A.w > B.w;
}
AD a[100011];
typedef struct{
  int key,ls,rs,siz;
  long long Ls,xs,valL,valx;
  int l,x,w;
}Tree;
Tree t[100011];
int root;
void push_up(int p)
{
  t[p].Ls = t[t[p].ls].Ls + t[t[p].rs].Ls + t[p].l;
  t[p].xs = t[t[p].ls].xs + t[t[p].rs].xs + t[p].x;
  t[p].valL = t[t[p].ls].valL + t[t[p].rs].valL + 1ll * t[p].l * t[p].w;
  t[p].valx = t[t[p].ls].valx + t[t[p].rs].valx + 1ll * t[p].x * t[p].w;
  t[p].siz = t[t[p].ls].siz + 1 + t[t[p].rs].siz;
}
int merge(int x,int y)
{
  if(!x || !y) return x|y;
  if(t[x].key < t[y].key)
      return t[x].rs = merge(t[x].rs,y),push_up(x),x;
  return t[y].ls = merge(x,t[y].ls),push_up(y),y;
}
void split_x(int p,long long k,int& l,int& r)
{
  if(!p) return l = r = 0,void();
  if(t[t[p].ls].xs + t[p].x <= k)
      return l = p,split_x(t[p].rs,k - t[t[p].ls].xs - t[p].x,t[p].rs,r),push_up(p);
  return r = p,split_x(t[p].ls,k,l,t[p].ls),push_up(p);
}
void split_s(int p,int k,int& l,int& r)
{
  if(!p) return l = r = 0,void();
  if(t[t[p].ls].siz + 1 <= k)
      return l = p,split_s(t[p].rs,k - t[t[p].ls].siz - 1,t[p].rs,r),push_up(p);
  return r = p,split_s(t[p].ls,k,l,t[p].ls),push_up(p);
}
int n;
long long m;
long long Solve(int& rt,int p)
{
  int l,r;
  split_s(rt,p - 1,l,r);
  split_s(r,1,p,r);
  long long res = t[l].valL + t[r].valL,S = m - t[l].Ls - t[r].Ls;
  if(t[l].xs <= S)
  {
    S -= t[l].xs;
    res += t[l].valx + (S * a[p].w);
  }else{
    int L,R;
    split_x(l,S,L,R);
    res += t[L].valx;
    S -= t[L].xs;
    int M;
    split_s(R,1,M,R);
    res += t[M].w * S;
    r = merge(merge(L,M),R);
  }
  rt = merge(merge(l,p),r);
  return res;
}
signed main(){
  ios::sync_with_stdio(false);
  cin.tie(0); cout.tie(0);
  cin >> n >> m;
  for(int i = 1;i <= n;i++)
      cin >> a[i].w >> a[i].l >> a[i].r;
  sort(a + 1,a + n + 1,cmp);
  for(int i = 1;i <= n;i++)
  {
    t[i] = {(int)Rnd(),0,0,1,0,0,0,0,a[i].l,a[i].r - a[i].l,a[i].w};
    push_up(i);
    root = merge(root,i);
  }
  long long ans = 0;
  for(int i = 1;i <= n;i++)
    ans = max(ans,Solve(root,i));
  cout << ans;
  return 0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 1ms
memory: 5716kb

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
Memory Limit Exceeded

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:


result: