oj.uz

Submission #737342

# Submission time Handle Problem Language Result Execution time Memory
737342 2023-05-07T05:28:45 Z bobthebuilder Sky Walking (IOI19_walk) C++17
0 / 100
 99 ms 104172 KB 
#include "walk.h"
#include<bits/stdc++.h>
using namespace std;
#define sz(x) (int)x.size()
#define REP(i,n) for(int i=0;i<n;i++)
#define REP1(i,n) for(int i=1;i<=n;i++)
#define pb push_back
#define lowb(x) (x&(-x))
#define ALL(_x) _x.begin(),_x.end()
#define pii pair<ll,int>
#define f first
#define s second
#define SORT_UNIQUE(x) sort(ALL(x)),x.erase(unique(ALL(x)),x.end())
#define ll long long
const ll INF64=4e18;
const int maxn=2e6+5;
vector<pii> gr[maxn];
void add(int a,int b,int w){
	gr[a].pb({b,w}),gr[b].pb({a,w});
}
vector<pii> pts[maxn];
ll dist[maxn];
long long min_distance(std::vector<int> xx, std::vector<int> h, std::vector<int> l, std::vector<int> r, std::vector<int> y, int s, int g) {
	int n=sz(xx),m=sz(l);
	vector<pii> v;
	REP(i,n){
		v.pb({h[i],i});
		pts[i].pb({0,i});
	}
	vector<pii> vv;
	sort(ALL(v));
	REP(i,m){
		vv.pb({y[i],i});
	}
	sort(ALL(vv));
	int p=0;
	set<int> ss;
	REP(i,n) ss.insert(i);
	int cur=n;
	for(auto x:vv){
		while(p<n and v[p].f<x.f){
			ss.erase(v[p].s);
			++p;
		}
		int a=l[x.s],b=r[x.s];
		auto it=ss.lower_bound(a);
		int pp=-1;
		vector<int> del;
		while(it!=ss.end() and (*it)<=b){
			int z=(*it);
			auto pv=pts[z].back();
			add(pv.s,cur,x.f-pv.f);
			pts[z].pb({x.f,cur});
			if(pp!=-1) add(cur-1,cur,xx[z]-xx[pp]);
			pp=z;
			++cur;
			if(z!=a and z!=b){
				del.pb(z);
			}
			++it;
		}
		for(int x:del) ss.erase(x);
	}
	REP(i,cur) dist[i]=INF64;
	priority_queue<pii,vector<pii>,greater<pii>> pq;
	pq.push({0,s});
	dist[s]=0;
	while(sz(pq)){
		int z=pq.top().s;
		if(pq.top().f>dist[z]){
			pq.pop();
			continue;
		}
		pq.pop();
		for(auto x:gr[z]){
			if(dist[x.f]>dist[z]+x.s){
				dist[x.f]=dist[z]+x.s;
				pq.push({dist[x.f],x.f});
			}
		}
	}
	if(dist[g]==INF64) dist[g]=-1;
	return dist[g];
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 94156 KB Output is correct
2 Correct 47 ms 94220 KB Output is correct
3 Correct 46 ms 94224 KB Output is correct
4 Correct 45 ms 94248 KB Output is correct
5 Correct 45 ms 94124 KB Output is correct
6 Incorrect 49 ms 94156 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 46 ms 94212 KB Output is correct
2 Correct 45 ms 94116 KB Output is correct
3 Incorrect 92 ms 101008 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 99 ms 104172 KB Output is correct
2 Incorrect 81 ms 99084 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 99 ms 104172 KB Output is correct
2 Incorrect 81 ms 99084 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 94156 KB Output is correct
2 Correct 47 ms 94220 KB Output is correct
3 Correct 46 ms 94224 KB Output is correct
4 Correct 45 ms 94248 KB Output is correct
5 Correct 45 ms 94124 KB Output is correct
6 Incorrect 49 ms 94156 KB Output isn't correct
7 Halted 0 ms 0 KB -