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  1. #include <bits/stdc++.h>
  2. #define int long long
  3. using namespace std;
  4. int n,m,j=1,ans=1e18,check[300005],st[1200006],lz[1200006];
  5. pair <int,pair<int,int>> p[300005];
  6. void UPDATE(int id, int l, int r, int u, int v, int x)
  7. {
  8.     if (l>v || r<u) return;
  9.     else if (l>=u && r<=v)
  10.     {
  11.         st[id]+=x,lz[id]+=x;
  12.         return;
  13.     }
  14.     int mid=(l+r)/2;
  15.     st[id*2]+=lz[id],lz[id*2]+=lz[id],st[id*2+1]+=lz[id],lz[id*2+1]+=lz[id],lz[id]=0;
  16.     UPDATE(id*2,l,mid,u,v,x),UPDATE(id*2+1,mid+1,r,u,v,x);
  17.     st[id]=min(st[id*2],st[id*2+1]);
  18. }
  19. int GET(int id, int l, int r, int u, int v)
  20. {
  21.     if (l>v || r<u) return 1e18;
  22.     else if (l>=u && r<=v) return st[id];
  23.     int mid=(l+r)/2;
  24.     st[id*2]+=lz[id],lz[id*2]+=lz[id],st[id*2+1]+=lz[id],lz[id*2+1]+=lz[id],lz[id]=0;
  25.     return min(GET(id*2,l,mid,u,v),GET(id*2+1,mid+1,r,u,v));
  26. }
  27. signed main()
  28. {
  29.     ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
  30.     cin>>n>>m;
  31.     for (int i=1;i<=n;i++) cin>>p[i].second.first>>p[i].second.second>>p[i].first;
  32.     sort(p+1,p+n+1);
  33.     for (int i=1;i<=n;i++)
  34.     {
  35.         int u=p[i].second.first,v=p[i].second.second,x=p[i].first;
  36.         UPDATE(1,1,m-1,u,v-1,x);
  37.         while (GET(1,1,m,1,m)!=0) 
  38.         {
  39.             UPDATE(1,1,m-1,p[j].second.first,p[j].second.second-1,-p[j].first);
  40.             ans=min(ans,p[i].first-p[j].first),j++;
  41.         }
  42.     }
  43.     cout<<ans;
  44.     return 0;
  45. }
Success #stdin #stdout 0s 5316KB
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stdin
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Standard input is empty
stdout
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1000000000000000000
https://ideone.com/8I5zmx
language:
C++14 (gcc 8.3)
created:
2 days ago
visibility:
public

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