oj.uz

답안 #1061777

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1061777 2024-08-16T13:18:51 Z RecursiveCo Sky Walking (IOI19_walk) C++17
33 / 100
 206 ms 25788 KB 
#include <bits/stdc++.h>
#include "walk.h"

using namespace std;

long long min_distance(vector<int> x, vector<int> h, vector<int> l, vector<int> r, vector<int> y, int s, int g) {
    // Assume s = 0, g = n - 1 and h consists of equal elements.
    int n = x.size(); // = h.size()
    int m = l.size(); // = r.size() = y.size()
    long long ans = x[n - 1] - x[0];
    map<pair<int, int>, long long> dp;
    vector<array<int, 4>> events;
    for (int i = 0; i < m; i++) {
        events.push_back({r[i] - 1, y[i], i, 1});
        events.push_back({l[i] - 1, y[i], i, 0});
    }
    sort(events.rbegin(), events.rend());
    vector<vector<int>> right(n);
    for (int i = 0; i < m; i++) right[r[i]].push_back(i);
    set<pair<int, int>> open;
    int ptr = 0;
    for (int i = n - 1; i >= 0; i--) {
        while (ptr < 2 * m && events[ptr][0] >= i) {
            int yc = events[ptr][1];
            int ind = events[ptr][2];
            int typ = events[ptr][3];
            if (typ) {
                open.insert({yc, ind});
            } else {
                open.erase({yc, ind});
            }
            ptr++;
        }
        for (int ind: right[i]) {
            long long val = 1e18;
            auto it = open.lower_bound({y[ind], -1});
            if (it != open.end()) {
                val = min(val, (long long) ((*it).first - y[ind]) + dp[{r[(*it).second], (*it).first}]);
            }
            if (it != open.begin()) {
                it--;
                val = min(val, (long long) (y[ind] - (*it).first) + dp[{r[(*it).second], (*it).first}]);
            }
            dp[{i, y[ind]}] = i == n - 1? y[ind]: val;
        }
    }
    long long extra = 1e18;
    for (int i = 0; i < m; i++) {
        if (l[i] == 0) {
            extra = min(extra, y[i] + dp[{r[i], y[i]}]);
        }
    }
    ans += extra;
    if (ans >= 1e18) return -1;
    return ans;
}

Subtask #1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 344 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 38 ms 7620 KB Output is correct
2 Correct 132 ms 14640 KB Output is correct
3 Correct 138 ms 16316 KB Output is correct
4 Correct 154 ms 22712 KB Output is correct
5 Correct 206 ms 25788 KB Output is correct
6 Correct 176 ms 23956 KB Output is correct
7 Correct 67 ms 14528 KB Output is correct
8 Correct 115 ms 23224 KB Output is correct
9 Correct 166 ms 24096 KB Output is correct
10 Correct 109 ms 23484 KB Output is correct
11 Correct 8 ms 3160 KB Output is correct

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 38 ms 7620 KB Output is correct
2 Correct 132 ms 14640 KB Output is correct
3 Correct 138 ms 16316 KB Output is correct
4 Correct 154 ms 22712 KB Output is correct
5 Correct 206 ms 25788 KB Output is correct
6 Correct 176 ms 23956 KB Output is correct
7 Correct 67 ms 14528 KB Output is correct
8 Correct 115 ms 23224 KB Output is correct
9 Correct 166 ms 24096 KB Output is correct
10 Correct 109 ms 23484 KB Output is correct
11 Correct 8 ms 3160 KB Output is correct
12 Correct 141 ms 16236 KB Output is correct
13 Correct 161 ms 22968 KB Output is correct
14 Correct 195 ms 25784 KB Output is correct
15 Correct 117 ms 21952 KB Output is correct
16 Correct 119 ms 22868 KB Output is correct
17 Correct 124 ms 22172 KB Output is correct
18 Correct 119 ms 22200 KB Output is correct
19 Correct 119 ms 22456 KB Output is correct
20 Correct 80 ms 14476 KB Output is correct
21 Correct 17 ms 6260 KB Output is correct
22 Correct 105 ms 18944 KB Output is correct
23 Correct 103 ms 20976 KB Output is correct
24 Correct 118 ms 21052 KB Output is correct
25 Correct 104 ms 19024 KB Output is correct
26 Correct 102 ms 22820 KB Output is correct
27 Correct 202 ms 24940 KB Output is correct
28 Correct 133 ms 21872 KB Output is correct
29 Correct 188 ms 23692 KB Output is correct
30 Correct 80 ms 14588 KB Output is correct
31 Correct 176 ms 24180 KB Output is correct
32 Correct 104 ms 21180 KB Output is correct
33 Correct 100 ms 22988 KB Output is correct
34 Correct 99 ms 21944 KB Output is correct
35 Correct 102 ms 21612 KB Output is correct
36 Correct 102 ms 21264 KB Output is correct
37 Correct 87 ms 20156 KB Output is correct
38 Correct 86 ms 22204 KB Output is correct
39 Correct 99 ms 20668 KB Output is correct
40 Correct 93 ms 22412 KB Output is correct
41 Correct 120 ms 20280 KB Output is correct

Subtask #5
0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -