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Submission #170575

# Submission time Handle Problem Language Result Execution time Memory
170575 2019-12-25T16:42:32 Z VEGAnn Jakarta Skyscrapers (APIO15_skyscraper) C++14
100 / 100
 717 ms 14712 KB 
#include <bits/stdc++.h>
#define all(x) x.begin(),x.end()
#define pii pair<int, int>
#define ft first
#define sd second
#define MP make_pair
#define PB push_back
#define sz(x) ((int)x.size())
using namespace std;
typedef long long ll;
const ll PW = 43;
const int N = 30010;
const int B = 100;
const int oo = 2e9;
set<pii> st;
vector<int> g[N];
int n, m, bg, dst[N][B], ed;

int make_nom(int x, int y){
    return y * n + x;
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0);
//    freopen("in.txt","r",stdin);
    cin >> n >> m;
    for (int i = 0; i < m; i++){
        int ps, vl;
        cin >> ps >> vl;
        if (i == 0)
            bg = ps;
        if (i == 1)
            ed = ps;
        g[ps].PB(vl);
    }
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < B; j++)
            dst[i][j] = oo;
        sort(all(g[i]));
        g[i].resize(unique(all(g[i])) - g[i].begin());
    }
    dst[bg][0] = 0;
    st.insert(MP(0, bg));
    while (sz(st)){
        int cur = (*st.begin()).sd;
        st.erase(st.begin());
        if (cur < n){
            for (int cr : g[cur]){
                if (cr >= B){
                    int steps = dst[cur][0];
                    for (int i = cur; i >= 0; i -= cr, steps++){
                        if (steps < dst[i][0]){
                            st.erase(MP(dst[i][0], i));
                            dst[i][0] = steps;
                            st.insert(MP(dst[i][0], i));
                        }
                    }
                    steps = dst[cur][0];
                    for (int i = cur; i < n; i += cr, steps++){
                        if (steps < dst[i][0]){
                            st.erase(MP(dst[i][0], i));
                            dst[i][0] = steps;
                            st.insert(MP(dst[i][0], i));
                        }
                    }
                } else {
                    if (dst[cur][cr] > dst[cur][0]){
                        int nom = make_nom(cur, cr);
                        st.erase(MP(dst[cur][cr], nom));
                        dst[cur][cr] = dst[cur][0];
                        st.insert(MP(dst[cur][cr], nom));
                    }
                }
            }
        } else {
            int dv = cur / n;
            cur %= n;
            int nw = cur - dv;
            int nd = dst[cur][dv] + 1;
            if (nw >= 0){
                if (dst[nw][dv] > nd){
                    int nom = make_nom(nw, dv);
                    st.erase(MP(dst[nw][dv], nom));
                    dst[nw][dv] = nd;
                    st.insert(MP(dst[nw][dv], nom));
                }
                if (dst[nw][0] > nd){
                    st.erase(MP(dst[nw][0], nw));
                    dst[nw][0] = nd;
                    st.insert(MP(dst[nw][0], nw));
                }
            }
                nw = cur + dv;
            if (nw < n){
                if (dst[nw][dv] > nd){
                    int nom = make_nom(nw, dv);
                    st.erase(MP(dst[nw][dv], nom));
                    dst[nw][dv] = nd;
                    st.insert(MP(dst[nw][dv], nom));
                }
                if (dst[nw][0] > nd){
                    st.erase(MP(dst[nw][0], nw));
                    dst[nw][0] = nd;
                    st.insert(MP(dst[nw][0], nw));
                }
            }
        }
    }
    cout << (dst[ed][0] == oo ? -1 : dst[ed][0]);
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1016 KB Output is correct
2 Correct 3 ms 1016 KB Output is correct
3 Correct 2 ms 1016 KB Output is correct
4 Correct 2 ms 1016 KB Output is correct
5 Correct 2 ms 1016 KB Output is correct
6 Correct 3 ms 1016 KB Output is correct
7 Correct 2 ms 1016 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1016 KB Output is correct
2 Correct 2 ms 1016 KB Output is correct
3 Correct 2 ms 1016 KB Output is correct
4 Correct 3 ms 1016 KB Output is correct
5 Correct 2 ms 1016 KB Output is correct
6 Correct 2 ms 1016 KB Output is correct
7 Correct 2 ms 1016 KB Output is correct
8 Correct 2 ms 1020 KB Output is correct
9 Correct 3 ms 1144 KB Output is correct
10 Correct 3 ms 1144 KB Output is correct
11 Correct 4 ms 1144 KB Output is correct
12 Correct 3 ms 1144 KB Output is correct
13 Correct 3 ms 1144 KB Output is correct
14 Correct 4 ms 1272 KB Output is correct
15 Correct 4 ms 1272 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1016 KB Output is correct
2 Correct 2 ms 1016 KB Output is correct
3 Correct 2 ms 1016 KB Output is correct
4 Correct 3 ms 1016 KB Output is correct
5 Correct 3 ms 1016 KB Output is correct
6 Correct 2 ms 1016 KB Output is correct
7 Correct 3 ms 1016 KB Output is correct
8 Correct 2 ms 1016 KB Output is correct
9 Correct 3 ms 1016 KB Output is correct
10 Correct 3 ms 1144 KB Output is correct
11 Correct 4 ms 1144 KB Output is correct
12 Correct 3 ms 1020 KB Output is correct
13 Correct 3 ms 1016 KB Output is correct
14 Correct 4 ms 1272 KB Output is correct
15 Correct 4 ms 1272 KB Output is correct
16 Correct 3 ms 1148 KB Output is correct
17 Correct 5 ms 1400 KB Output is correct
18 Correct 3 ms 1784 KB Output is correct
19 Correct 4 ms 1916 KB Output is correct
20 Correct 4 ms 1912 KB Output is correct
21 Correct 3 ms 1272 KB Output is correct
22 Correct 3 ms 1784 KB Output is correct
23 Correct 5 ms 1656 KB Output is correct
24 Correct 6 ms 1916 KB Output is correct
25 Correct 5 ms 1916 KB Output is correct
26 Correct 4 ms 1912 KB Output is correct
27 Correct 4 ms 1784 KB Output is correct
28 Correct 5 ms 1912 KB Output is correct
29 Correct 14 ms 1912 KB Output is correct
30 Correct 6 ms 1912 KB Output is correct
31 Correct 9 ms 1912 KB Output is correct
32 Correct 7 ms 1784 KB Output is correct
33 Correct 23 ms 1912 KB Output is correct
34 Correct 24 ms 1912 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1016 KB Output is correct
2 Correct 2 ms 1016 KB Output is correct
3 Correct 2 ms 1016 KB Output is correct
4 Correct 2 ms 1016 KB Output is correct
5 Correct 3 ms 1016 KB Output is correct
6 Correct 3 ms 1044 KB Output is correct
7 Correct 2 ms 1016 KB Output is correct
8 Correct 2 ms 1016 KB Output is correct
9 Correct 2 ms 1144 KB Output is correct
10 Correct 3 ms 1144 KB Output is correct
11 Correct 4 ms 1144 KB Output is correct
12 Correct 3 ms 1016 KB Output is correct
13 Correct 3 ms 1148 KB Output is correct
14 Correct 4 ms 1148 KB Output is correct
15 Correct 4 ms 1144 KB Output is correct
16 Correct 3 ms 1144 KB Output is correct
17 Correct 5 ms 1400 KB Output is correct
18 Correct 3 ms 1784 KB Output is correct
19 Correct 3 ms 1784 KB Output is correct
20 Correct 4 ms 1912 KB Output is correct
21 Correct 3 ms 1144 KB Output is correct
22 Correct 3 ms 1784 KB Output is correct
23 Correct 4 ms 1656 KB Output is correct
24 Correct 5 ms 1784 KB Output is correct
25 Correct 4 ms 1912 KB Output is correct
26 Correct 4 ms 1784 KB Output is correct
27 Correct 4 ms 1784 KB Output is correct
28 Correct 5 ms 1912 KB Output is correct
29 Correct 13 ms 1924 KB Output is correct
30 Correct 6 ms 1784 KB Output is correct
31 Correct 9 ms 1912 KB Output is correct
32 Correct 8 ms 1784 KB Output is correct
33 Correct 24 ms 1912 KB Output is correct
34 Correct 24 ms 1912 KB Output is correct
35 Correct 23 ms 1912 KB Output is correct
36 Correct 6 ms 1528 KB Output is correct
37 Correct 28 ms 2168 KB Output is correct
38 Correct 30 ms 2168 KB Output is correct
39 Correct 29 ms 2168 KB Output is correct
40 Correct 27 ms 2168 KB Output is correct
41 Correct 27 ms 2140 KB Output is correct
42 Correct 9 ms 2040 KB Output is correct
43 Correct 9 ms 2044 KB Output is correct
44 Correct 9 ms 2040 KB Output is correct
45 Correct 46 ms 2296 KB Output is correct
46 Correct 46 ms 2296 KB Output is correct

Subtask #5
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1016 KB Output is correct
2 Correct 3 ms 1016 KB Output is correct
3 Correct 2 ms 1016 KB Output is correct
4 Correct 2 ms 1016 KB Output is correct
5 Correct 3 ms 1016 KB Output is correct
6 Correct 2 ms 1016 KB Output is correct
7 Correct 2 ms 1016 KB Output is correct
8 Correct 3 ms 1016 KB Output is correct
9 Correct 2 ms 1144 KB Output is correct
10 Correct 3 ms 1144 KB Output is correct
11 Correct 4 ms 1144 KB Output is correct
12 Correct 3 ms 1144 KB Output is correct
13 Correct 3 ms 1144 KB Output is correct
14 Correct 4 ms 1144 KB Output is correct
15 Correct 4 ms 1144 KB Output is correct
16 Correct 3 ms 1144 KB Output is correct
17 Correct 5 ms 1400 KB Output is correct
18 Correct 3 ms 1784 KB Output is correct
19 Correct 3 ms 1784 KB Output is correct
20 Correct 4 ms 1912 KB Output is correct
21 Correct 3 ms 1144 KB Output is correct
22 Correct 3 ms 1784 KB Output is correct
23 Correct 4 ms 1784 KB Output is correct
24 Correct 5 ms 1916 KB Output is correct
25 Correct 4 ms 1912 KB Output is correct
26 Correct 4 ms 1912 KB Output is correct
27 Correct 4 ms 1912 KB Output is correct
28 Correct 5 ms 1912 KB Output is correct
29 Correct 13 ms 1912 KB Output is correct
30 Correct 6 ms 1784 KB Output is correct
31 Correct 9 ms 1912 KB Output is correct
32 Correct 8 ms 1912 KB Output is correct
33 Correct 24 ms 1912 KB Output is correct
34 Correct 24 ms 1916 KB Output is correct
35 Correct 20 ms 1916 KB Output is correct
36 Correct 6 ms 1528 KB Output is correct
37 Correct 28 ms 2168 KB Output is correct
38 Correct 27 ms 2168 KB Output is correct
39 Correct 27 ms 2168 KB Output is correct
40 Correct 27 ms 2168 KB Output is correct
41 Correct 27 ms 2168 KB Output is correct
42 Correct 9 ms 2040 KB Output is correct
43 Correct 9 ms 2040 KB Output is correct
44 Correct 9 ms 2040 KB Output is correct
45 Correct 46 ms 2296 KB Output is correct
46 Correct 48 ms 2296 KB Output is correct
47 Correct 105 ms 6776 KB Output is correct
48 Correct 18 ms 10616 KB Output is correct
49 Correct 18 ms 11384 KB Output is correct
50 Correct 17 ms 12408 KB Output is correct
51 Correct 77 ms 14072 KB Output is correct
52 Correct 80 ms 14072 KB Output is correct
53 Correct 32 ms 13432 KB Output is correct
54 Correct 14 ms 12792 KB Output is correct
55 Correct 16 ms 12792 KB Output is correct
56 Correct 27 ms 13688 KB Output is correct
57 Correct 123 ms 12936 KB Output is correct
58 Correct 25 ms 13048 KB Output is correct
59 Correct 30 ms 13048 KB Output is correct
60 Correct 32 ms 13048 KB Output is correct
61 Correct 31 ms 13040 KB Output is correct
62 Correct 55 ms 13688 KB Output is correct
63 Correct 200 ms 14456 KB Output is correct
64 Correct 108 ms 14456 KB Output is correct
65 Correct 136 ms 14328 KB Output is correct
66 Correct 683 ms 14628 KB Output is correct
67 Correct 717 ms 14712 KB Output is correct