oj.uz

Submission #960488

# Submission time Handle Problem Language Result Execution time Memory
960488 2024-04-10T14:11:03 Z quanlt206 Jakarta Skyscrapers (APIO15_skyscraper) C++17
100 / 100
 673 ms 26404 KB 
#include<bits/stdc++.h>
#define X first
#define Y second
#define all(x) begin(x), end(x)
#define FOR(i, a, b) for(int i = (a); i <= (b); i++)
#define FORD(i, b, a) for(int i = (b); i >= (a); i--)
#define REP(i, a, b) for (int i = (a); i < (b); i++)
#define mxx max_element
#define mnn min_element
#define SQR(x) (1LL * (x) * (x))
#define MASK(i) (1LL << (i))
#define Point Vector
#define left Left
#define right Right
#define div Div

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef long double ld;
typedef pair<db, db> pdb;
typedef pair<ld, ld> pld;
typedef pair<int, int> pii;
typedef pair<int, pii> piii;
typedef pair<ll, ll> pll;
typedef pair<ll, pll> plll;
typedef pair<ll, int> pli;
typedef pair<ll, pii> plii;

template<class A, class B>
    bool maximize(A& x, B y) {
        if (x < y) return x = y, true; else return false;
    }
template<class A, class B>
    bool minimize(A& x, B y) {
        if (x > y) return x = y, true; else return false;
    }
/* END OF TEMPLATE */

const int N = 3e4 + 7;
const int M = 3e4 + 7;
const int Q = 175;

int n, m, a[M], b[M];

vector<int> v[N];

int col0 = 0, col1 = 1;

int d[N][Q];

void bfs(int s, int x, int t) {
    int S = sqrt(n);
    FOR(i, 0, n)
        FOR(j, 0, S + 1) d[i][j] = 1e9;
    priority_queue<piii, vector<piii>, greater<piii>> pq;
    if (x <= S) {
        d[s][x] = 0;
        pq.push({0, {s, x}});
    }
    else {
        d[s][S + 1] = 0;
        pq.push({0, {s, S + 1}});
        int u = x;
        int cnt = 1, w = 0;
        for (int t = s - u; t >= 0; t-=u) {
            if (minimize(d[t][S + 1], w + cnt)) pq.push({d[t][S + 1], {t, S + 1}});
            cnt++;
        }
        cnt = 1;
        for (int t = s + u; t < n; t+=u) {
            if (minimize(d[t][S + 1], w + cnt)) pq.push({d[t][S + 1], {t, S + 1}});
            cnt++;
        }
    }
    while (!pq.empty()) {
        piii tmp = pq.top();
        pq.pop();
        int w = tmp.X, s = tmp.Y.X, x = tmp.Y.Y;
//        cout<<s<<" "<<x<<" "<<w<<"\n";
        if (w != d[s][x]) continue;
        if (x <= S) {
            if (s - x >= 0 && minimize(d[s - x][x], w + 1)) pq.push({w + 1, {s - x, x}});
            if (s + x < n && minimize(d[s + x][x], w + 1)) pq.push({w + 1, {s + x, x}});
        }
        for (auto u : v[s])
            if (u <= S) {
                if (minimize(d[s][u], w)) pq.push({w, {s, u}});
            }
            else {
                int cnt = 1;
                for (int t = s - u; t >= 0; t-=u) {
                    if (minimize(d[t][S + 1], w + cnt)) pq.push({d[t][S + 1], {t, S + 1}});
                    cnt++;
                }
                cnt = 1;
                for (int t = s + u; t < n; t+=u) {
                    if (minimize(d[t][S + 1], w + cnt)) pq.push({d[t][S + 1], {t, S + 1}});
                    cnt++;
                }
            }
        v[s].clear();
    }
    int res = 1e9;
    FOR(j, 0, S + 1) minimize(res, d[t][j]);
    cout<<(res == 1e9 ? -1 : res);
}

int main() {
//    freopen("APIO15_SKYSCRAPER.inp", "r", stdin);
//    freopen("APIO15_SKYSCRAPER.out", "w", stdout);
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cin>>n>>m;
    REP(i, 0, m) {
        cin>>a[i]>>b[i];
        v[a[i]].push_back(b[i]);
    }
    bfs(a[0], b[0], a[1]);
    return 0;

}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2992 KB Output is correct
2 Correct 1 ms 2908 KB Output is correct
3 Correct 4 ms 2908 KB Output is correct
4 Correct 1 ms 3060 KB Output is correct
5 Correct 2 ms 2908 KB Output is correct
6 Correct 1 ms 2908 KB Output is correct
7 Correct 1 ms 3104 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2908 KB Output is correct
2 Correct 1 ms 2908 KB Output is correct
3 Correct 1 ms 2908 KB Output is correct
4 Correct 1 ms 2908 KB Output is correct
5 Correct 2 ms 2904 KB Output is correct
6 Correct 1 ms 2908 KB Output is correct
7 Correct 1 ms 2908 KB Output is correct
8 Correct 2 ms 2908 KB Output is correct
9 Correct 1 ms 2908 KB Output is correct
10 Correct 2 ms 3164 KB Output is correct
11 Correct 2 ms 3416 KB Output is correct
12 Correct 2 ms 3160 KB Output is correct
13 Correct 1 ms 3160 KB Output is correct
14 Correct 1 ms 3164 KB Output is correct
15 Correct 1 ms 3164 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2904 KB Output is correct
2 Correct 1 ms 2908 KB Output is correct
3 Correct 1 ms 2908 KB Output is correct
4 Correct 1 ms 2908 KB Output is correct
5 Correct 1 ms 2904 KB Output is correct
6 Correct 1 ms 2908 KB Output is correct
7 Correct 1 ms 2908 KB Output is correct
8 Correct 1 ms 2908 KB Output is correct
9 Correct 1 ms 2904 KB Output is correct
10 Correct 1 ms 3160 KB Output is correct
11 Correct 1 ms 3160 KB Output is correct
12 Correct 1 ms 3164 KB Output is correct
13 Correct 1 ms 3164 KB Output is correct
14 Correct 1 ms 3164 KB Output is correct
15 Correct 1 ms 3164 KB Output is correct
16 Correct 1 ms 3164 KB Output is correct
17 Correct 2 ms 5208 KB Output is correct
18 Correct 1 ms 5212 KB Output is correct
19 Correct 2 ms 5212 KB Output is correct
20 Correct 1 ms 5212 KB Output is correct
21 Correct 1 ms 5220 KB Output is correct
22 Correct 1 ms 5212 KB Output is correct
23 Correct 2 ms 5212 KB Output is correct
24 Correct 2 ms 5132 KB Output is correct
25 Correct 2 ms 5208 KB Output is correct
26 Correct 2 ms 5208 KB Output is correct
27 Correct 2 ms 5212 KB Output is correct
28 Correct 3 ms 5208 KB Output is correct
29 Correct 6 ms 5208 KB Output is correct
30 Correct 2 ms 5212 KB Output is correct
31 Correct 4 ms 5212 KB Output is correct
32 Correct 2 ms 5404 KB Output is correct
33 Correct 10 ms 5512 KB Output is correct
34 Correct 10 ms 5468 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2908 KB Output is correct
2 Correct 1 ms 2908 KB Output is correct
3 Correct 1 ms 2908 KB Output is correct
4 Correct 1 ms 2908 KB Output is correct
5 Correct 1 ms 2908 KB Output is correct
6 Correct 1 ms 2908 KB Output is correct
7 Correct 1 ms 2908 KB Output is correct
8 Correct 1 ms 3160 KB Output is correct
9 Correct 1 ms 2908 KB Output is correct
10 Correct 1 ms 3160 KB Output is correct
11 Correct 1 ms 3164 KB Output is correct
12 Correct 1 ms 3160 KB Output is correct
13 Correct 1 ms 3164 KB Output is correct
14 Correct 1 ms 3164 KB Output is correct
15 Correct 1 ms 3164 KB Output is correct
16 Correct 1 ms 3164 KB Output is correct
17 Correct 2 ms 5212 KB Output is correct
18 Correct 1 ms 5212 KB Output is correct
19 Correct 1 ms 5212 KB Output is correct
20 Correct 1 ms 5212 KB Output is correct
21 Correct 1 ms 5212 KB Output is correct
22 Correct 1 ms 5212 KB Output is correct
23 Correct 2 ms 5212 KB Output is correct
24 Correct 2 ms 5212 KB Output is correct
25 Correct 2 ms 5188 KB Output is correct
26 Correct 2 ms 5212 KB Output is correct
27 Correct 2 ms 5212 KB Output is correct
28 Correct 2 ms 5212 KB Output is correct
29 Correct 6 ms 5352 KB Output is correct
30 Correct 2 ms 5212 KB Output is correct
31 Correct 4 ms 5364 KB Output is correct
32 Correct 2 ms 5212 KB Output is correct
33 Correct 10 ms 5468 KB Output is correct
34 Correct 10 ms 5468 KB Output is correct
35 Correct 8 ms 5724 KB Output is correct
36 Correct 2 ms 5212 KB Output is correct
37 Correct 10 ms 5724 KB Output is correct
38 Correct 11 ms 5656 KB Output is correct
39 Correct 12 ms 5724 KB Output is correct
40 Correct 11 ms 5860 KB Output is correct
41 Correct 11 ms 5720 KB Output is correct
42 Correct 5 ms 5724 KB Output is correct
43 Correct 5 ms 5724 KB Output is correct
44 Correct 4 ms 5724 KB Output is correct
45 Correct 13 ms 5672 KB Output is correct
46 Correct 13 ms 5924 KB Output is correct

Subtask #5
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2904 KB Output is correct
2 Correct 1 ms 2908 KB Output is correct
3 Correct 1 ms 2908 KB Output is correct
4 Correct 1 ms 2908 KB Output is correct
5 Correct 1 ms 3160 KB Output is correct
6 Correct 1 ms 2908 KB Output is correct
7 Correct 1 ms 2908 KB Output is correct
8 Correct 1 ms 2908 KB Output is correct
9 Correct 1 ms 2908 KB Output is correct
10 Correct 1 ms 3160 KB Output is correct
11 Correct 1 ms 3164 KB Output is correct
12 Correct 1 ms 3164 KB Output is correct
13 Correct 1 ms 3164 KB Output is correct
14 Correct 1 ms 3164 KB Output is correct
15 Correct 1 ms 3160 KB Output is correct
16 Correct 1 ms 3164 KB Output is correct
17 Correct 2 ms 5212 KB Output is correct
18 Correct 1 ms 5160 KB Output is correct
19 Correct 1 ms 5212 KB Output is correct
20 Correct 1 ms 5212 KB Output is correct
21 Correct 1 ms 5212 KB Output is correct
22 Correct 1 ms 5212 KB Output is correct
23 Correct 2 ms 5212 KB Output is correct
24 Correct 2 ms 5212 KB Output is correct
25 Correct 1 ms 5300 KB Output is correct
26 Correct 2 ms 5212 KB Output is correct
27 Correct 2 ms 5300 KB Output is correct
28 Correct 2 ms 5396 KB Output is correct
29 Correct 8 ms 5212 KB Output is correct
30 Correct 2 ms 5212 KB Output is correct
31 Correct 4 ms 5212 KB Output is correct
32 Correct 2 ms 5212 KB Output is correct
33 Correct 10 ms 5516 KB Output is correct
34 Correct 10 ms 5720 KB Output is correct
35 Correct 9 ms 5816 KB Output is correct
36 Correct 3 ms 5212 KB Output is correct
37 Correct 10 ms 5744 KB Output is correct
38 Correct 11 ms 5724 KB Output is correct
39 Correct 13 ms 5980 KB Output is correct
40 Correct 11 ms 5720 KB Output is correct
41 Correct 11 ms 5724 KB Output is correct
42 Correct 5 ms 5724 KB Output is correct
43 Correct 5 ms 5724 KB Output is correct
44 Correct 4 ms 5724 KB Output is correct
45 Correct 13 ms 5724 KB Output is correct
46 Correct 13 ms 5724 KB Output is correct
47 Correct 48 ms 14420 KB Output is correct
48 Correct 12 ms 20056 KB Output is correct
49 Correct 9 ms 22364 KB Output is correct
50 Correct 11 ms 22108 KB Output is correct
51 Correct 35 ms 23068 KB Output is correct
52 Correct 44 ms 23068 KB Output is correct
53 Correct 13 ms 22548 KB Output is correct
54 Correct 5 ms 21720 KB Output is correct
55 Correct 5 ms 21716 KB Output is correct
56 Correct 13 ms 22876 KB Output is correct
57 Correct 66 ms 21820 KB Output is correct
58 Correct 12 ms 22184 KB Output is correct
59 Correct 12 ms 22108 KB Output is correct
60 Correct 21 ms 22108 KB Output is correct
61 Correct 14 ms 22192 KB Output is correct
62 Correct 38 ms 22876 KB Output is correct
63 Correct 40 ms 23796 KB Output is correct
64 Correct 44 ms 24024 KB Output is correct
65 Correct 234 ms 24008 KB Output is correct
66 Correct 673 ms 26404 KB Output is correct
67 Correct 668 ms 25356 KB Output is correct