oj.uz

답안 #1013257

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1013257 2024-07-03T10:47:55 Z boris_mihov Sky Walking (IOI19_walk) C++17
10 / 100
 4000 ms 443724 KB 
#include "walk.h"
#include <algorithm>
#include <iostream>
#include <numeric>
#include <cassert>
#include <vector>
#include <queue>
#include <stack>
#include <map>

typedef long long llong;
const int MAXN = 100000 + 10;
const int INTERSECTIONS = 10 + 5;
const llong INF = 1e18;
const int INTINF = 1e9;

namespace
{
    int cnt;
    int n, m;
    int s, t;
    int h[MAXN];
    int x[MAXN];
    int l[MAXN];
    int r[MAXN];
    int y[MAXN];
    std::map <int,int> map[MAXN];
    bool vis[MAXN * INTERSECTIONS];
    llong dist[MAXN * INTERSECTIONS];
    std::vector <std::pair <int,int>> g[MAXN * INTERSECTIONS]; 
    int cntNodes;
}

llong solve()
{
    for (int i = 1 ; i <= n ; ++i)
    {
        map[i][0] = ++cnt;
    }

    for (int i = 1 ; i <= m ; ++i)
    {
        int prev = -1;
        // std::cout << "building: " << i << ' ' << l[i] << ' ' << r[i] << ' ' << y[i] << '\n';
        for (int j = l[i] ; j <= r[i] ; ++j)
        {
            if (y[i] <= h[j])
            {
                if (map[j][y[i]] == 0)
                {
                    map[j][y[i]] = ++cnt;
                }

                if (prev != -1)
                {
                    // std::cout << "edge hor: " << x[prev] << ' ' << y[i] << ' ' << x[j] << ' ' << y[i] << ' ' << map[prev][y[i]] << ' ' << << '\n';
                    g[map[prev][y[i]]].push_back({map[j][y[i]], x[j] - x[prev]});
                    g[map[j][y[i]]].push_back({map[prev][y[i]], x[j] - x[prev]});
                }

                prev = j;
            }
        }
    }

    for (int i = 1 ; i <= n ; ++i)
    {
        auto prev = map[i].begin();
        for (auto curr = std::next(map[i].begin()) ; curr != map[i].end() ; ++curr)
        {
            // std::cout << "edge ver: " << x[i] << ' ' << prev->first << ' ' << x[i] << ' ' << curr->first << '\n';
            g[prev->second].push_back({curr->second, curr->first - prev->first});
            g[curr->second].push_back({prev->second, curr->first - prev->first});
            prev = curr;
        }
    }

    std::priority_queue <std::pair <llong,int>> pq;
    std::fill(dist + 1, dist + 1 + cnt, INF);
    pq.push({0, map[s][0]});
    dist[map[s][0]] = 0;

    while (pq.size())
    {
        auto [d, node] = pq.top();
        pq.pop();

        if (vis[node])
        {
            continue;
        }

        vis[node] = true;
        for (const auto &[u, ed] : g[node])
        {
            if (dist[u] > dist[node] + ed)
            {
                dist[u] = dist[node] + ed;
                pq.push({-dist[u], u});
            }
        }
    }

	return (dist[map[t][0]] == INF ? -1 : dist[map[t][0]]);
}

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 t) 
{
    n = x.size();
    m = l.size();
    ::s = s + 1; ::t = t + 1;

    for (int i = 0 ; i < n ; ++i)
    {
        ::h[i + 1] = h[i];
        ::x[i + 1] = x[i];
    }

    for (int i = 0 ; i < m ; ++i)
    {
        ::l[i + 1] = l[i] + 1;
        ::r[i + 1] = r[i] + 1;
        ::y[i + 1] = y[i];
    }

    return solve();
}

Compilation message

walk.cpp:31:9: warning: '{anonymous}::cntNodes' defined but not used [-Wunused-variable]
   31 |     int cntNodes;
      |         ^~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 41816 KB Output is correct
2 Correct 10 ms 41820 KB Output is correct
3 Correct 11 ms 41820 KB Output is correct
4 Correct 17 ms 41820 KB Output is correct
5 Correct 12 ms 41820 KB Output is correct
6 Correct 11 ms 41888 KB Output is correct
7 Correct 11 ms 41760 KB Output is correct
8 Correct 10 ms 41820 KB Output is correct
9 Correct 11 ms 41816 KB Output is correct
10 Correct 11 ms 41820 KB Output is correct
11 Correct 12 ms 41848 KB Output is correct
12 Correct 12 ms 41820 KB Output is correct
13 Correct 11 ms 41820 KB Output is correct
14 Correct 12 ms 41816 KB Output is correct
15 Correct 11 ms 41820 KB Output is correct
16 Correct 13 ms 41820 KB Output is correct
17 Correct 12 ms 41820 KB Output is correct

Subtask #2
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 41820 KB Output is correct
2 Correct 11 ms 41636 KB Output is correct
3 Correct 602 ms 137084 KB Output is correct
4 Correct 449 ms 149332 KB Output is correct
5 Correct 286 ms 133232 KB Output is correct
6 Correct 593 ms 123636 KB Output is correct
7 Correct 298 ms 133508 KB Output is correct
8 Correct 861 ms 163804 KB Output is correct
9 Correct 382 ms 132764 KB Output is correct
10 Correct 779 ms 188156 KB Output is correct
11 Correct 286 ms 94288 KB Output is correct
12 Correct 156 ms 78960 KB Output is correct
13 Correct 581 ms 169888 KB Output is correct
14 Correct 1804 ms 77128 KB Output is correct
15 Correct 970 ms 77172 KB Output is correct
16 Correct 240 ms 78164 KB Output is correct
17 Correct 204 ms 77324 KB Output is correct
18 Execution timed out 4064 ms 64660 KB Time limit exceeded
19 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 76 ms 51976 KB Output is correct
2 Runtime error 984 ms 443724 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 76 ms 51976 KB Output is correct
2 Runtime error 984 ms 443724 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 41816 KB Output is correct
2 Correct 10 ms 41820 KB Output is correct
3 Correct 11 ms 41820 KB Output is correct
4 Correct 17 ms 41820 KB Output is correct
5 Correct 12 ms 41820 KB Output is correct
6 Correct 11 ms 41888 KB Output is correct
7 Correct 11 ms 41760 KB Output is correct
8 Correct 10 ms 41820 KB Output is correct
9 Correct 11 ms 41816 KB Output is correct
10 Correct 11 ms 41820 KB Output is correct
11 Correct 12 ms 41848 KB Output is correct
12 Correct 12 ms 41820 KB Output is correct
13 Correct 11 ms 41820 KB Output is correct
14 Correct 12 ms 41816 KB Output is correct
15 Correct 11 ms 41820 KB Output is correct
16 Correct 13 ms 41820 KB Output is correct
17 Correct 12 ms 41820 KB Output is correct
18 Correct 12 ms 41820 KB Output is correct
19 Correct 11 ms 41636 KB Output is correct
20 Correct 602 ms 137084 KB Output is correct
21 Correct 449 ms 149332 KB Output is correct
22 Correct 286 ms 133232 KB Output is correct
23 Correct 593 ms 123636 KB Output is correct
24 Correct 298 ms 133508 KB Output is correct
25 Correct 861 ms 163804 KB Output is correct
26 Correct 382 ms 132764 KB Output is correct
27 Correct 779 ms 188156 KB Output is correct
28 Correct 286 ms 94288 KB Output is correct
29 Correct 156 ms 78960 KB Output is correct
30 Correct 581 ms 169888 KB Output is correct
31 Correct 1804 ms 77128 KB Output is correct
32 Correct 970 ms 77172 KB Output is correct
33 Correct 240 ms 78164 KB Output is correct
34 Correct 204 ms 77324 KB Output is correct
35 Execution timed out 4064 ms 64660 KB Time limit exceeded
36 Halted 0 ms 0 KB -