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Submission #373258

# Submission time Handle Problem Language Result Execution time Memory
373258 2021-03-03T23:47:52 Z MilosMilutinovic Job Scheduling (IOI19_job) C++14
0 / 100
 31 ms 32364 KB 
#include "job.h"
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pb push_back

const int mxN=2e5;
int n;
vector<int> adj[mxN];
vector<ll> p(mxN), u(mxN), d(mxN);
bool was[mxN];
ll ans=0;

struct cmp{
	bool operator()(int x, int y) {
		return (ll)d[x]*(ll)u[y]>(ll)d[y]*(ll)u[x];
	}
};

priority_queue<int, vector<int>, cmp> q[mxN];

void merge(int x, int y) {
	d[x]+=d[y];
	u[x]+=u[y];	
}

void dfs(int x) {
	assert(x>=0&&x<n);
	for(int v:adj[x])
		dfs(v), q[x].push(v);
	while(!q[x].empty()) {
		int y=q[x].top();
		if((ll)d[y]*(ll)u[x]>(ll)d[x]*(ll)u[y])
			break;
		was[y]=true;
		q[x].pop();
		ans-=d[y]*u[x];
		merge(x, y);
		if((int)q[x].size()<(int)q[y].size())
			swap(q[x], q[y]);
		while(!q[y].empty())
			q[x].push(q[y].top()), q[y].pop();
	}	
}

ll scheduling_cost(vector<int> p1, vector<int> u1, vector<int> d1) {
	for(int i=0; i<n; ++i)
		p[i]=(ll)p1[i], u[i]=(ll)u1[i], d[i]=(ll)d1[i];
	n = (int) p.size();
	for(int i=1; i<n; ++i) 
		adj[p1[i]].pb(i);
	dfs(0);
	vector<int> j;
	for(int i=0; i<n; ++i)
		if(!was[i])
			j.pb(i);
	sort(j.rbegin(), j.rend(), [&](int x, int y) {
		return (ll)d[x]*u[y]>(ll)d[y]*u[x];
	});
	ll t=0LL;
	for(int i:j)
		t+=d[i], ans+=(ll)u[i]*t;
	return ans;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 30 ms 32108 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Runtime error 29 ms 32108 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 29 ms 32200 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Runtime error 31 ms 32364 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Runtime error 29 ms 32108 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #6
0 / 37.0

# Verdict Execution time Memory Grader output
1 Runtime error 30 ms 32108 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -