oj.uz

답안 #823400

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
823400 2023-08-12T13:16:23 Z I_Love_EliskaM_ Sky Walking (IOI19_walk) C++17
15 / 100
 506 ms 134660 KB 
#include "walk.h"
#include <bits/stdc++.h>
using namespace std;
#define forn(i,n) for(int i=0; i<n; ++i)
#define pb push_back
using ll = long long;
const ll inf = 1e18;
#define pi pair<ll,ll>
#define f first
#define s second
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(),x.rend()

#define int ll
const int sz=1<<30;
struct sgt {
	sgt *L, *R; int s;
	sgt() {
		L=R=NULL; s=inf;
	}
	void set(int l, int r, int i, int x) {
		if (r-l==1) {
			s=x; return;
		}
		int m=(l+r)>>1;
		if (i<m) {
			if (!L) L=new sgt();
			L->set(l,m,i,x);
		} else {
			if (!R) R=new sgt();
			R->set(m,r,i,x);
		}
		s = min(L?L->s:inf, R?R->s:inf);
	}
	void set(int i, int x) {
		set(0,sz,i,x);
	}
	int query(int l, int r, int lx, int rx) {
		if (rx<=l || r<=lx) return inf;
		if (lx<=l && r<=rx) return s;
		int m=(l+r)>>1;
		int lq=L?L->query(l,m,lx,rx):inf;
		int rq=R?R->query(m,r,lx,rx):inf;
		return min(lq,rq);
	}
	int query(int l, int r) {
		return query(0,sz,l,r);
	}
};

const int N=1e5+55;
vector<pi> adj[10*N];
ll d[10*N];

map<int,int> c[N]; int _z=0; const int Z=1e9+5;
int ind(int x, int y) {
	if (c[x].count(y)) return c[x][y];
	return c[x][y]=_z++;
}
#undef int

ll p12(vector<int>x, vector<int>h, vector<int>l, vector<int>r, vector<int>y, int s, int g) {
	int n=x.size(), m=l.size();
	
	vector<vector<int>> g1(n);
	vector<vector<int>> g2(m);
	g1[s].pb(0);
	g1[g].pb(0);

	vector<pi> v;
	forn(i,n) v.pb({h[i],i});
	forn(i,m) v.pb({y[i],-i-1});
	sort(rall(v));

	set<int> st;
	for(auto&z:v) {
		int y=z.f, i=z.s;
		if (i>=0) {
			st.insert(i); continue;
		}
		i*=-1; --i;
		auto it=st.upper_bound(l[i]);
		vector<int> v;
		while (1) {
			int j=*it;
			v.pb(j);
			if (j==r[i]) break;
			++it;
		}
		if (v.size() > 10 && max(n,m)>50) return -2;
		g1[l[i]].pb(y);
		int last=l[i];
		for(auto&j:v) {
			adj[ind(last,y)].pb({ind(j,y),x[j]-x[last]});
			adj[ind(j,y)].pb({ind(last,y),x[j]-x[last]});
			g1[j].pb(y);
			last=j;
		}
	}

	forn(i,n) {
		sort(all(g1[i]));
		int sz=g1[i].size();
		forn(j,sz-1) {
			adj[ind(i,g1[i][j])].pb({ind(i,g1[i][j+1]),g1[i][j+1]-g1[i][j]});
			adj[ind(i,g1[i][j+1])].pb({ind(i,g1[i][j]),g1[i][j+1]-g1[i][j]});
		}
	}

	forn(i,_z) d[i]=inf;
	priority_queue<pair<ll,ll>> q; q.push({0,ind(s,0)});

	while(q.size()) {
		auto it=q.top(); q.pop();
		ll di=-it.f, u=it.s;
		if (d[u]<=di) continue;
		d[u]=di;
		for(auto&e:adj[u]) {
			int v=e.f, w=e.s;
			if (d[v]!=inf) continue;
			q.push({-di-w,v});
		}
	}

	if (d[ind(g,0)]==inf) return -1;
	return d[ind(g,0)];
}

ll min_distance(vector<int>x, vector<int>h, vector<int>l, vector<int>r, vector<int>y, int s, int g) {
	int n=x.size(), m=l.size();

	//auto z = p12(x,h,l,r,y,s,g);
	//if (z!=-2) return z;
	
	#define int ll

	sgt bottom, top;
	bottom.set(0,0);
	top.set(0,0);
	vector<vector<int>> add(n), del(n);
	del[0].pb(0);
	add[n-1].pb(0);
	forn(i,m) {
		add[l[i]].pb(y[i]);
		del[r[i]].pb(y[i]);
	}
	forn(i,n) {
		vector<pi> toset;
		for(auto&y:add[i]) {
			int f = bottom.query(0,y+1);
			int s = top.query(y,h[i]+1);
			if (min(f,s)==inf) continue;
			f+=y; s-=y;
			int x=min(f,s);
			toset.pb({y,x});
		}
		for(auto&y:del[i]) {
			bottom.set(y,inf);
			top.set(y,inf);
		}
		for(auto&x:toset) {
			bottom.set(x.f,x.s-x.f);
			top.set(x.f,x.s+x.f);
		}
	}
	if (top.s==inf) return -1;
	int f = top.s+x[n-1]-x[0];
	return f;

	#undef int
}

Subtask #1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 15 ms 28500 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 16 ms 28500 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 75 ms 32576 KB Output is correct
2 Correct 406 ms 124448 KB Output is correct
3 Correct 386 ms 111032 KB Output is correct
4 Correct 457 ms 131636 KB Output is correct
5 Correct 506 ms 132488 KB Output is correct
6 Correct 472 ms 134660 KB Output is correct
7 Correct 212 ms 87108 KB Output is correct
8 Correct 348 ms 126240 KB Output is correct
9 Correct 481 ms 130756 KB Output is correct
10 Correct 153 ms 51112 KB Output is correct
11 Correct 24 ms 32480 KB Output is correct

Subtask #4
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 75 ms 32576 KB Output is correct
2 Correct 406 ms 124448 KB Output is correct
3 Correct 386 ms 111032 KB Output is correct
4 Correct 457 ms 131636 KB Output is correct
5 Correct 506 ms 132488 KB Output is correct
6 Correct 472 ms 134660 KB Output is correct
7 Correct 212 ms 87108 KB Output is correct
8 Correct 348 ms 126240 KB Output is correct
9 Correct 481 ms 130756 KB Output is correct
10 Correct 153 ms 51112 KB Output is correct
11 Correct 24 ms 32480 KB Output is correct
12 Correct 436 ms 118784 KB Output is correct
13 Correct 365 ms 128096 KB Output is correct
14 Correct 480 ms 127072 KB Output is correct
15 Correct 250 ms 77780 KB Output is correct
16 Correct 271 ms 77216 KB Output is correct
17 Correct 270 ms 77196 KB Output is correct
18 Correct 250 ms 77816 KB Output is correct
19 Correct 276 ms 77380 KB Output is correct
20 Correct 213 ms 86216 KB Output is correct
21 Correct 37 ms 37964 KB Output is correct
22 Correct 232 ms 106700 KB Output is correct
23 Correct 243 ms 108156 KB Output is correct
24 Correct 233 ms 114016 KB Output is correct
25 Correct 252 ms 117900 KB Output is correct
26 Correct 256 ms 126072 KB Output is correct
27 Correct 464 ms 127788 KB Output is correct
28 Correct 362 ms 131584 KB Output is correct
29 Correct 474 ms 126036 KB Output is correct
30 Correct 202 ms 87096 KB Output is correct
31 Correct 496 ms 130692 KB Output is correct
32 Correct 150 ms 47104 KB Output is correct
33 Incorrect 143 ms 48776 KB Output isn't correct
34 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 15 ms 28500 KB Output isn't correct
2 Halted 0 ms 0 KB -