Submission #1035171

#	Time	Username	Problem	Language	Result	Execution time	Memory
1035171		BABY_GANGSTER	Jobs (BOI24_jobs)	C++14	29 / 100	113 ms	74644 KiB

Main

//https://www.instagram.com/_modwwe/
#pragma GCC optimize("Ofast,unroll-loops")
//#pragma GCC target("avx2,bmi,bmi2")
#include<bits/stdc++.h>
#define int long long
//#define ll long long
#define down cout<<'\n';
#define debug cout<<" cucuucucuuu",down
#define NHP     ios_base::sync_with_stdio(0);cout.tie(0);cin.tie(0);
#define modwwe  int t;cin>>t; while(t--)
#define bit(i,j) (i>>j&1)
#define sobit(a) __builtin_popcountll(a)
#define task "test"
#define fin(x) freopen(x".inp","r",stdin)
#define fou(x) freopen(x".ans","w",stdout)
#define pb push_back
#define checktime   cerr << (double)clock() / CLOCKS_PER_SEC * 1000  << " ms";
using namespace std;
void phongbeo();
const int inf=1e18;
const int mod2=1e9+7;
const int  mod1=998244353;
struct icd
{
    int a,b;
};
struct ib
{
    int a;
    int b;
};
struct ic
{
    int a,b,c;
};
struct id
{
    int a,b,c,d;
};
struct ie
{
    int a,b,c,d,e,f;

};
int n,m,s1,s2,s4,s3,sf,k,r,mid,s5,s6,mx,s7,s8,s9,mx2,res,dem2=0,dem=0,l,s33;
int  i,s10,s12;
int kk;
int el=29;
main()
{
#ifndef ONLINE_JUDGE
    //fin(task),fou(task);
#endif
    NHP
    /// cin>>s1;
    //  modwwe
    phongbeo();
}
vector<ib> v[300001];
struct cmp
{
     bool operator()(ib a,ib b)
     {
         return a.a>b.a;
     }
};
priority_queue<ib,vector<ib>,cmp>p;
int heavy[300001];
int a[300001];
bool b[300001];
int c[3000001];
bool cmp2(ib a,ib b)
{
    return a.b>b.b;
}
int dfs(int x,int c,int d,int e)
{
int d2=c-d;
int c2=c;
int d3=d;
int e2=e;
vector<ib> vv;
     for(auto f:v[x])
     { if(c>=0) d=c,e=0;
        vv.pb({f.a,dfs(f.a,c+f.b,d,min(c-d,e))});
     d=d3;
     e=e2;
     }

sort(vv.begin(),vv.end(),cmp2);
if(vv.size()!=0)heavy[x]=vv[0].a;
if(c-d>=0) return e2;
 else if(vv.size()!=0) return vv[0].b;
 else return -1e18;
}
void dfs2(int x,int y,int e,int d,int g)
 {  b[x]=1;
 //cout<<x<<" "<<d-y<<" "<<e<<" "<<g<<" "<<heavy[1]<<"\n";
       if(d-y>=0)p.push({abs(e),d-y}),c[g]=max(c[g],abs(e)),d=0,e=0,y=0,g=x;
     if(heavy[x]!=0)dfs2(heavy[x],y,min(e,d-y),d+a[heavy[x]],x);
     for(auto f:v[x])
         if(!b[f.a]&&c[x]!=-1e18)
         dfs2(f.a,0,-c[x],a[f.a],f.a);
 }
void phongbeo()
{
    cin>>n>>dem;
    dem2=dem;
     for(int i=1;i<=n;i++)
         cin>>l>>r,v[r].pb({i,l}),a[i]=l;
         for(int i=0;i<=n;i++)
             c[i]=-1e18;
      dfs(0,0,0,0);
      dfs2(0,0,0,0,0);
       while(!p.empty())
       {
            ib x=p.top();
            if(dem>=x.a)dem+=x.b;
           else break;
            p.pop();
       }
       cout<<dem-dem2;
}

Compilation message (stderr)

Main.cpp:49:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   49 | main()
      | ^~~~
Main.cpp: In function 'long long int dfs(long long int, long long int, long long int, long long int)':
Main.cpp:78:5: warning: unused variable 'd2' [-Wunused-variable]
   78 | int d2=c-d;
      |     ^~
Main.cpp:79:5: warning: unused variable 'c2' [-Wunused-variable]
   79 | int c2=c;
      |     ^~
Main.cpp: In function 'void phongbeo()':
Main.cpp:109:6: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  109 |      for(int i=1;i<=n;i++)
      |      ^~~
Main.cpp:111:10: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  111 |          for(int i=0;i<=n;i++)
      |          ^~~

• Subtask 1: 0 / 11
• Subtask 2: 14 / 14
• Subtask 3: 15 / 15
• Subtask 4: 0 / 29
• Subtask 5: 0 / 31