oj.uz

Submission #826509

# Submission time Handle Problem Language Result Execution time Memory
826509 2023-08-15T16:10:07 Z I_Love_EliskaM_ Sky Walking (IOI19_walk) C++17
57 / 100
 1450 ms 233912 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();

    if (s!=0 || g!=n-1) return p12(x,h,l,r,y,s,g);
	
	#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,sz);
			if (min(f,s)==inf) return -1;
			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);
		}
	}
	int f = top.s+x[n-1]-x[0];
	return f;

	#undef int
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 28468 KB Output is correct
2 Correct 15 ms 28488 KB Output is correct
3 Correct 15 ms 28500 KB Output is correct
4 Correct 15 ms 28500 KB Output is correct
5 Correct 15 ms 28628 KB Output is correct
6 Correct 15 ms 28532 KB Output is correct
7 Correct 16 ms 28500 KB Output is correct
8 Correct 15 ms 28504 KB Output is correct
9 Correct 15 ms 28480 KB Output is correct
10 Correct 15 ms 28628 KB Output is correct
11 Correct 15 ms 28500 KB Output is correct
12 Correct 15 ms 28480 KB Output is correct
13 Correct 15 ms 28500 KB Output is correct
14 Correct 14 ms 28452 KB Output is correct
15 Correct 15 ms 28516 KB Output is correct
16 Correct 15 ms 28500 KB Output is correct
17 Correct 14 ms 28480 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 28388 KB Output is correct
2 Correct 15 ms 28480 KB Output is correct
3 Correct 1039 ms 168064 KB Output is correct
4 Correct 864 ms 176724 KB Output is correct
5 Correct 542 ms 156868 KB Output is correct
6 Correct 475 ms 141772 KB Output is correct
7 Correct 537 ms 156972 KB Output is correct
8 Correct 1450 ms 206736 KB Output is correct
9 Correct 663 ms 155408 KB Output is correct
10 Correct 1267 ms 233912 KB Output is correct
11 Correct 464 ms 103680 KB Output is correct
12 Correct 318 ms 130228 KB Output is correct
13 Correct 325 ms 130048 KB Output is correct
14 Correct 224 ms 78296 KB Output is correct
15 Correct 252 ms 79556 KB Output is correct
16 Correct 246 ms 80056 KB Output is correct
17 Correct 253 ms 78664 KB Output is correct
18 Correct 169 ms 55272 KB Output is correct
19 Correct 20 ms 31008 KB Output is correct
20 Correct 89 ms 53804 KB Output is correct
21 Correct 125 ms 42916 KB Output is correct
22 Correct 133 ms 46524 KB Output is correct
23 Correct 163 ms 54384 KB Output is correct
24 Correct 135 ms 46284 KB Output is correct
25 Correct 129 ms 43956 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 68 ms 32656 KB Output is correct
2 Correct 355 ms 124392 KB Output is correct
3 Correct 344 ms 111024 KB Output is correct
4 Correct 395 ms 131608 KB Output is correct
5 Correct 427 ms 132556 KB Output is correct
6 Correct 413 ms 134632 KB Output is correct
7 Correct 180 ms 87072 KB Output is correct
8 Correct 312 ms 126220 KB Output is correct
9 Correct 415 ms 130644 KB Output is correct
10 Correct 152 ms 51120 KB Output is correct
11 Correct 23 ms 32348 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 68 ms 32656 KB Output is correct
2 Correct 355 ms 124392 KB Output is correct
3 Correct 344 ms 111024 KB Output is correct
4 Correct 395 ms 131608 KB Output is correct
5 Correct 427 ms 132556 KB Output is correct
6 Correct 413 ms 134632 KB Output is correct
7 Correct 180 ms 87072 KB Output is correct
8 Correct 312 ms 126220 KB Output is correct
9 Correct 415 ms 130644 KB Output is correct
10 Correct 152 ms 51120 KB Output is correct
11 Correct 23 ms 32348 KB Output is correct
12 Correct 350 ms 118816 KB Output is correct
13 Correct 83 ms 45216 KB Output is correct
14 Correct 406 ms 127016 KB Output is correct
15 Correct 230 ms 77772 KB Output is correct
16 Correct 243 ms 77300 KB Output is correct
17 Correct 255 ms 77156 KB Output is correct
18 Correct 229 ms 77800 KB Output is correct
19 Correct 239 ms 77364 KB Output is correct
20 Correct 182 ms 86108 KB Output is correct
21 Correct 35 ms 37964 KB Output is correct
22 Correct 246 ms 106764 KB Output is correct
23 Correct 250 ms 108220 KB Output is correct
24 Correct 257 ms 113992 KB Output is correct
25 Correct 292 ms 117976 KB Output is correct
26 Correct 270 ms 126120 KB Output is correct
27 Correct 408 ms 127824 KB Output is correct
28 Correct 72 ms 45276 KB Output is correct
29 Correct 401 ms 125964 KB Output is correct
30 Correct 176 ms 87128 KB Output is correct
31 Correct 409 ms 130700 KB Output is correct
32 Correct 138 ms 46984 KB Output is correct
33 Correct 138 ms 48716 KB Output is correct
34 Correct 153 ms 51432 KB Output is correct
35 Correct 182 ms 64396 KB Output is correct
36 Correct 186 ms 61004 KB Output is correct
37 Correct 125 ms 43024 KB Output is correct
38 Correct 130 ms 46412 KB Output is correct
39 Correct 165 ms 54496 KB Output is correct
40 Correct 143 ms 46212 KB Output is correct
41 Correct 130 ms 43980 KB Output is correct

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 28468 KB Output is correct
2 Correct 15 ms 28488 KB Output is correct
3 Correct 15 ms 28500 KB Output is correct
4 Correct 15 ms 28500 KB Output is correct
5 Correct 15 ms 28628 KB Output is correct
6 Correct 15 ms 28532 KB Output is correct
7 Correct 16 ms 28500 KB Output is correct
8 Correct 15 ms 28504 KB Output is correct
9 Correct 15 ms 28480 KB Output is correct
10 Correct 15 ms 28628 KB Output is correct
11 Correct 15 ms 28500 KB Output is correct
12 Correct 15 ms 28480 KB Output is correct
13 Correct 15 ms 28500 KB Output is correct
14 Correct 14 ms 28452 KB Output is correct
15 Correct 15 ms 28516 KB Output is correct
16 Correct 15 ms 28500 KB Output is correct
17 Correct 14 ms 28480 KB Output is correct
18 Correct 14 ms 28388 KB Output is correct
19 Correct 15 ms 28480 KB Output is correct
20 Correct 1039 ms 168064 KB Output is correct
21 Correct 864 ms 176724 KB Output is correct
22 Correct 542 ms 156868 KB Output is correct
23 Correct 475 ms 141772 KB Output is correct
24 Correct 537 ms 156972 KB Output is correct
25 Correct 1450 ms 206736 KB Output is correct
26 Correct 663 ms 155408 KB Output is correct
27 Correct 1267 ms 233912 KB Output is correct
28 Correct 464 ms 103680 KB Output is correct
29 Correct 318 ms 130228 KB Output is correct
30 Correct 325 ms 130048 KB Output is correct
31 Correct 224 ms 78296 KB Output is correct
32 Correct 252 ms 79556 KB Output is correct
33 Correct 246 ms 80056 KB Output is correct
34 Correct 253 ms 78664 KB Output is correct
35 Correct 169 ms 55272 KB Output is correct
36 Correct 20 ms 31008 KB Output is correct
37 Correct 89 ms 53804 KB Output is correct
38 Correct 125 ms 42916 KB Output is correct
39 Correct 133 ms 46524 KB Output is correct
40 Correct 163 ms 54384 KB Output is correct
41 Correct 135 ms 46284 KB Output is correct
42 Correct 129 ms 43956 KB Output is correct
43 Correct 68 ms 32656 KB Output is correct
44 Correct 355 ms 124392 KB Output is correct
45 Correct 344 ms 111024 KB Output is correct
46 Correct 395 ms 131608 KB Output is correct
47 Correct 427 ms 132556 KB Output is correct
48 Correct 413 ms 134632 KB Output is correct
49 Correct 180 ms 87072 KB Output is correct
50 Correct 312 ms 126220 KB Output is correct
51 Correct 415 ms 130644 KB Output is correct
52 Correct 152 ms 51120 KB Output is correct
53 Correct 23 ms 32348 KB Output is correct
54 Correct 350 ms 118816 KB Output is correct
55 Correct 83 ms 45216 KB Output is correct
56 Correct 406 ms 127016 KB Output is correct
57 Correct 230 ms 77772 KB Output is correct
58 Correct 243 ms 77300 KB Output is correct
59 Correct 255 ms 77156 KB Output is correct
60 Correct 229 ms 77800 KB Output is correct
61 Correct 239 ms 77364 KB Output is correct
62 Correct 182 ms 86108 KB Output is correct
63 Correct 35 ms 37964 KB Output is correct
64 Correct 246 ms 106764 KB Output is correct
65 Correct 250 ms 108220 KB Output is correct
66 Correct 257 ms 113992 KB Output is correct
67 Correct 292 ms 117976 KB Output is correct
68 Correct 270 ms 126120 KB Output is correct
69 Correct 408 ms 127824 KB Output is correct
70 Correct 72 ms 45276 KB Output is correct
71 Correct 401 ms 125964 KB Output is correct
72 Correct 176 ms 87128 KB Output is correct
73 Correct 409 ms 130700 KB Output is correct
74 Correct 138 ms 46984 KB Output is correct
75 Correct 138 ms 48716 KB Output is correct
76 Correct 153 ms 51432 KB Output is correct
77 Correct 182 ms 64396 KB Output is correct
78 Correct 186 ms 61004 KB Output is correct
79 Correct 125 ms 43024 KB Output is correct
80 Correct 130 ms 46412 KB Output is correct
81 Correct 165 ms 54496 KB Output is correct
82 Correct 143 ms 46212 KB Output is correct
83 Correct 130 ms 43980 KB Output is correct
84 Incorrect 27 ms 32972 KB Output isn't correct
85 Halted 0 ms 0 KB -