oj.uz

답안 #634578

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
634578 2022-08-24T15:12:36 Z qwerasdfzxcl Sky Walking (IOI19_walk) C++17
33 / 100
 648 ms 95720 KB 
#include "walk.h"
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
const ll INF = 4e18;
struct Seg{
    priority_queue<pair<ll, int>, vector<pair<ll, int>>, greater<pair<ll, int>>> tree[200200];
    int sz;
    void init(int n){sz = n;}
    void update(int x, ll val, int e){
        x += sz;
        for (;x;x>>=1) tree[x].emplace(val, e);
    }
    ll query(int l, int r, int s){
        ++r;
        ll ret = INF;
        for (l+=sz, r+=sz;l<r;l>>=1, r>>=1){
            if (l&1){
                while(!tree[l].empty() && tree[l].top().second < s) tree[l].pop();
                if (!tree[l].empty()) ret = min(ret, tree[l].top().first);
                l++;
            }
            if (r&1){
                --r;
                while(!tree[r].empty() && tree[r].top().second < s) tree[r].pop();
                if (!tree[r].empty()) ret = min(ret, tree[r].top().first);
            }
        }
        return ret;
    }
}tree1, tree2;

struct Line{
    int l, r, y, i;
    Line(){}
    Line(int _l, int _r, int _y, int _i): l(_l), r(_r), y(_y), i(_i) {}
    bool operator < (const Line &L) const{
        return tie(l, y) < tie(L.l, L.y);
    }
}E[100100];
ll D[100100];

ll myabs(ll x){return x<0?-x:x;}
ll dist(ll x1, ll y1, ll x2, ll y2){return myabs(x1-x2) + myabs(y1-y2);}

vector<int> cy;
int getidx(int y){return lower_bound(cy.begin(), cy.end(), y) - cy.begin();}

long long min_distance(std::vector<int> x, std::vector<int> h, std::vector<int> l, std::vector<int> r, std::vector<int> y, int s, int g) {
	int n = x.size(), m = l.size();
	if (n==1) return 0;
	for (int i=0;i<m;i++) E[i] = Line(x[l[i]], x[r[i]], y[i], i);
	sort(E, E+m);

	cy = y;
	cy.push_back(0);
	sort(cy.begin(), cy.end());
	cy.erase(unique(cy.begin(), cy.end()), cy.end());
	tree1.init(m+1);
	tree2.init(m+1);

	tree1.update(0, dist(x[0], 0, 1e9, 1e9), x[0]);
	fill(D, D+m, INF);
	//printf("ok\n");

    for (int i=0;i<m;){
        int j = i;
        for (;j<m;j++) if (E[i].l!=E[j].l) break;

        for (int k=i;k<j;k++){
            D[k] = min(D[k], tree1.query(0, getidx(E[k].y), E[k].l) - dist(E[k].l, E[k].y, 1e9, 1e9));
        }
        for (int k=j-1;k>=i;k--){
            D[k] = min(D[k], tree2.query(getidx(E[k].y)+1, m, E[k].l) - dist(E[k].l, E[k].y, 1e9, 0));
        }

        for (int k=i;k<j;k++){
            tree1.update(getidx(E[k].y), D[k] + dist(E[k].l, E[k].y, 1e9, 1e9), E[k].r);
            tree2.update(getidx(E[k].y), D[k] + dist(E[k].l, E[k].y, 1e9, 0), E[k].r);
        }

        i = j;
    }

    //for (int i=0;i<m;i++) printf(" %d %d %d -> %lld\n", E[i].l, E[i].r, E[i].y, D[i]);

    ll ans = INF;
    for (int i=0;i<m;i++) if (E[i].r==x[g]) ans = min(ans, D[i] + dist(E[i].l, E[i].y, x[g], 0));
    return ans>=INF/2?-1:ans;
}

Subtask #1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 7 ms 12756 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 7 ms 12756 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 88 ms 39796 KB Output is correct
2 Correct 558 ms 72744 KB Output is correct
3 Correct 647 ms 74140 KB Output is correct
4 Correct 619 ms 76796 KB Output is correct
5 Correct 541 ms 89196 KB Output is correct
6 Correct 648 ms 84328 KB Output is correct
7 Correct 331 ms 45344 KB Output is correct
8 Correct 520 ms 67968 KB Output is correct
9 Correct 563 ms 86900 KB Output is correct
10 Correct 202 ms 85444 KB Output is correct
11 Correct 23 ms 14416 KB Output is correct

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 88 ms 39796 KB Output is correct
2 Correct 558 ms 72744 KB Output is correct
3 Correct 647 ms 74140 KB Output is correct
4 Correct 619 ms 76796 KB Output is correct
5 Correct 541 ms 89196 KB Output is correct
6 Correct 648 ms 84328 KB Output is correct
7 Correct 331 ms 45344 KB Output is correct
8 Correct 520 ms 67968 KB Output is correct
9 Correct 563 ms 86900 KB Output is correct
10 Correct 202 ms 85444 KB Output is correct
11 Correct 23 ms 14416 KB Output is correct
12 Correct 569 ms 73520 KB Output is correct
13 Correct 539 ms 77928 KB Output is correct
14 Correct 475 ms 90792 KB Output is correct
15 Correct 345 ms 95720 KB Output is correct
16 Correct 376 ms 72748 KB Output is correct
17 Correct 354 ms 78264 KB Output is correct
18 Correct 330 ms 95704 KB Output is correct
19 Correct 368 ms 70920 KB Output is correct
20 Correct 277 ms 45240 KB Output is correct
21 Correct 29 ms 16824 KB Output is correct
22 Correct 368 ms 62216 KB Output is correct
23 Correct 435 ms 66956 KB Output is correct
24 Correct 373 ms 73696 KB Output is correct
25 Correct 364 ms 59572 KB Output is correct
26 Correct 371 ms 72756 KB Output is correct
27 Correct 472 ms 88500 KB Output is correct
28 Correct 499 ms 71036 KB Output is correct
29 Correct 564 ms 85040 KB Output is correct
30 Correct 256 ms 45296 KB Output is correct
31 Correct 492 ms 86736 KB Output is correct
32 Correct 171 ms 82016 KB Output is correct
33 Correct 174 ms 89600 KB Output is correct
34 Correct 215 ms 79640 KB Output is correct
35 Correct 273 ms 74768 KB Output is correct
36 Correct 189 ms 69760 KB Output is correct
37 Correct 121 ms 74668 KB Output is correct
38 Correct 125 ms 75440 KB Output is correct
39 Correct 241 ms 79760 KB Output is correct
40 Correct 154 ms 79124 KB Output is correct
41 Correct 131 ms 73248 KB Output is correct

Subtask #5
0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 7 ms 12756 KB Output isn't correct
2 Halted 0 ms 0 KB -