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Submission #386796

# Submission time Handle Problem Language Result Execution time Memory
386796 2021-04-07T10:16:10 Z wenqi Jakarta Skyscrapers (APIO15_skyscraper) C++14
100 / 100
 721 ms 183788 KB 
#include <bits/stdc++.h>

using namespace std;

using ll = long long;

#define all(x) begin(x), end(x)
#define fillc(p, t, v) fill_n((t*) p, sizeof(p) / sizeof(t), v)
#define pb push_back

#define MID 269
#define O 30069
#define MAX 9690000000000ll
#define K 9999999999699ll
#define OM (O / MID + 69)

int N, M;

int B[O];
int P[O];
int TP;

vector<int> SMALL[O];
vector<int> BIG[O];

ll smallc[O][MID + 69];
bool seen1[O][MID + 69];
ll bigc[O][2 * OM + 69];

ll dp_small(int, int);
ll dp_big(int, int);

ll dp_small(int pos, int step) {
    ll& ans = smallc[pos][step];
    if(ans != -2) return ans;
    ans = K;
    ll a = ans;
    if(pos == TP) return ans = 0;
    for(int j : SMALL[pos]) {
        a = min(a, dp_small(B[j], P[j]));
    }
    for(int j : BIG[pos]) {
        a = min(a, dp_big(j, OM));
    }
    if(pos - step >= 0) {
        a = min(a, 1 + dp_small(pos - step, step));
    }
    if(pos + step < N) {
        a = min(a, 1 + dp_small(pos + step, step));
    }
    if(a == K) {
        ans = -2;
        return K;
    }else{
        ans = min(ans, MAX);
        return ans = a;
    }
}

ll dp_big(int i, int offset) {
    ll& ans = bigc[i][offset];
    if(ans != -2) return ans;
    ans = MAX;
    int pos = B[i] + (offset - OM) * P[i];
    if(pos == TP) return ans = 0;
    for(int j : SMALL[pos]) {
        ans = min(ans, dp_small(B[j], P[j]));
    }
    for(int j : BIG[pos]) {
        ans = min(ans, dp_big(j, OM));
    }
    if(pos - P[i] >= 0) {
        ans = min(ans, 1 + dp_big(i, offset - 1));
    }
    if(pos + P[i] < N) {
        ans = min(ans, 1 + dp_big(i, offset + 1));
    }
    return ans;
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cin >> N >> M;
    for(int i = 0; i < M; i++) {
        cin >> B[i] >> P[i];
        if(P[i] < MID)
            SMALL[B[i]].pb(i);
        else
            BIG[B[i]].pb(i);
    }
    fillc(smallc, ll, MAX);
    fillc(bigc, ll, MAX);
    queue<pair<int, pair<int, int>>> q;
    if(P[0] < MID) {
        smallc[B[0]][P[0]] = 0;
        q.push({0, {B[0], P[0]}});
    }else{
        bigc[0][OM] = 0;
        q.push({1, {0, OM}});
    }
    while(not q.empty()) {
        auto p = q.front();
        q.pop();

        int pos, step;
        int a, b;

        int t = p.first;
        a = p.second.first;
        b = p.second.second;

        ll dis;

        if (t == 0) {
            dis = smallc[a][b];
            pos = a;
            step = b;
        }else{
            dis = bigc[a][b];
            pos = B[a] + (b - OM) * P[a];
            step = P[a];
        }

        for(int j : SMALL[pos]) {
            ll& c = smallc[B[j]][P[j]];
            if(dis < c) {
                c = dis;
                q.push({0, {B[j], P[j]}});
            }
        }

        for(int j : BIG[pos]) {
            ll& c = bigc[j][OM];
            if(dis < c) {
                c = dis;
                q.push({1, {j, OM}});
            }
        }

        if(t == 0) {
            if(pos - step >= 0) {
                ll& c = smallc[pos - step][step];
                if(dis + 1 < c) {
                    c = dis + 1;
                    q.push({t, {pos - step, step}});
                }
            }
            if(pos + step < N) {
                ll& c = smallc[pos + step][step];
                if(dis + 1 < c) {
                    c = dis + 1;
                    q.push({t, {pos + step, step}});
                }
            }
        }else{
            if(pos - step >= 0) {
                ll& c = bigc[a][b - 1];
                if(dis + 1 < c) {
                    c = dis + 1;
                    q.push({t, {a, b - 1}});
                }
            }
            if(pos + step < N) {
                ll& c = bigc[a][b + 1];
                if(dis + 1 < c) {
                    c = dis + 1;
                    q.push({t, {a, b + 1}});
                }
            }
        }
    }
    ll ans = min(smallc[B[1]][P[1]], bigc[1][OM]);
    cout << (ans >= MAX ? -1 : ans) << '\n';
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 108 ms 182312 KB Output is correct
2 Correct 96 ms 182380 KB Output is correct
3 Correct 97 ms 182252 KB Output is correct
4 Correct 96 ms 182252 KB Output is correct
5 Correct 97 ms 182252 KB Output is correct
6 Correct 97 ms 182252 KB Output is correct
7 Correct 98 ms 182252 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 97 ms 182340 KB Output is correct
2 Correct 97 ms 182304 KB Output is correct
3 Correct 95 ms 182252 KB Output is correct
4 Correct 96 ms 182252 KB Output is correct
5 Correct 103 ms 182240 KB Output is correct
6 Correct 98 ms 182252 KB Output is correct
7 Correct 96 ms 182252 KB Output is correct
8 Correct 96 ms 182324 KB Output is correct
9 Correct 99 ms 182380 KB Output is correct
10 Correct 96 ms 182316 KB Output is correct
11 Correct 111 ms 182380 KB Output is correct
12 Correct 95 ms 182380 KB Output is correct
13 Correct 98 ms 182380 KB Output is correct
14 Correct 100 ms 182380 KB Output is correct
15 Correct 98 ms 182380 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 102 ms 182252 KB Output is correct
2 Correct 96 ms 182380 KB Output is correct
3 Correct 100 ms 182380 KB Output is correct
4 Correct 96 ms 182252 KB Output is correct
5 Correct 95 ms 182252 KB Output is correct
6 Correct 96 ms 182252 KB Output is correct
7 Correct 97 ms 182252 KB Output is correct
8 Correct 96 ms 182252 KB Output is correct
9 Correct 98 ms 182400 KB Output is correct
10 Correct 98 ms 182272 KB Output is correct
11 Correct 98 ms 182380 KB Output is correct
12 Correct 96 ms 182380 KB Output is correct
13 Correct 98 ms 182380 KB Output is correct
14 Correct 111 ms 182380 KB Output is correct
15 Correct 116 ms 182380 KB Output is correct
16 Correct 98 ms 182380 KB Output is correct
17 Correct 102 ms 182380 KB Output is correct
18 Correct 102 ms 182380 KB Output is correct
19 Correct 96 ms 182380 KB Output is correct
20 Correct 110 ms 182380 KB Output is correct
21 Correct 98 ms 182252 KB Output is correct
22 Correct 96 ms 182252 KB Output is correct
23 Correct 99 ms 182380 KB Output is correct
24 Correct 101 ms 182488 KB Output is correct
25 Correct 98 ms 182380 KB Output is correct
26 Correct 97 ms 182380 KB Output is correct
27 Correct 104 ms 182508 KB Output is correct
28 Correct 110 ms 182380 KB Output is correct
29 Correct 102 ms 182252 KB Output is correct
30 Correct 97 ms 182252 KB Output is correct
31 Correct 99 ms 182380 KB Output is correct
32 Correct 102 ms 182252 KB Output is correct
33 Correct 104 ms 182380 KB Output is correct
34 Correct 103 ms 182380 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 99 ms 182252 KB Output is correct
2 Correct 103 ms 182252 KB Output is correct
3 Correct 98 ms 182240 KB Output is correct
4 Correct 95 ms 182252 KB Output is correct
5 Correct 97 ms 182252 KB Output is correct
6 Correct 95 ms 182252 KB Output is correct
7 Correct 98 ms 182252 KB Output is correct
8 Correct 96 ms 182252 KB Output is correct
9 Correct 97 ms 182380 KB Output is correct
10 Correct 100 ms 182380 KB Output is correct
11 Correct 96 ms 182380 KB Output is correct
12 Correct 96 ms 182380 KB Output is correct
13 Correct 99 ms 182380 KB Output is correct
14 Correct 96 ms 182380 KB Output is correct
15 Correct 98 ms 182380 KB Output is correct
16 Correct 104 ms 182252 KB Output is correct
17 Correct 101 ms 182380 KB Output is correct
18 Correct 96 ms 182308 KB Output is correct
19 Correct 97 ms 182252 KB Output is correct
20 Correct 99 ms 182420 KB Output is correct
21 Correct 98 ms 182380 KB Output is correct
22 Correct 109 ms 182380 KB Output is correct
23 Correct 100 ms 182380 KB Output is correct
24 Correct 100 ms 182380 KB Output is correct
25 Correct 97 ms 182380 KB Output is correct
26 Correct 97 ms 182380 KB Output is correct
27 Correct 99 ms 182380 KB Output is correct
28 Correct 100 ms 182380 KB Output is correct
29 Correct 99 ms 182252 KB Output is correct
30 Correct 98 ms 182252 KB Output is correct
31 Correct 99 ms 182252 KB Output is correct
32 Correct 98 ms 182272 KB Output is correct
33 Correct 110 ms 182508 KB Output is correct
34 Correct 102 ms 182380 KB Output is correct
35 Correct 140 ms 182892 KB Output is correct
36 Correct 102 ms 182380 KB Output is correct
37 Correct 140 ms 182892 KB Output is correct
38 Correct 164 ms 183532 KB Output is correct
39 Correct 154 ms 183532 KB Output is correct
40 Correct 155 ms 183404 KB Output is correct
41 Correct 165 ms 183472 KB Output is correct
42 Correct 101 ms 183148 KB Output is correct
43 Correct 109 ms 183020 KB Output is correct
44 Correct 101 ms 183148 KB Output is correct
45 Correct 157 ms 183416 KB Output is correct
46 Correct 140 ms 183276 KB Output is correct

Subtask #5
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 98 ms 182252 KB Output is correct
2 Correct 97 ms 182252 KB Output is correct
3 Correct 100 ms 182252 KB Output is correct
4 Correct 107 ms 182252 KB Output is correct
5 Correct 99 ms 182252 KB Output is correct
6 Correct 95 ms 182252 KB Output is correct
7 Correct 96 ms 182252 KB Output is correct
8 Correct 95 ms 182252 KB Output is correct
9 Correct 99 ms 182252 KB Output is correct
10 Correct 97 ms 182252 KB Output is correct
11 Correct 98 ms 182380 KB Output is correct
12 Correct 96 ms 182380 KB Output is correct
13 Correct 97 ms 182380 KB Output is correct
14 Correct 97 ms 182380 KB Output is correct
15 Correct 97 ms 182380 KB Output is correct
16 Correct 97 ms 182380 KB Output is correct
17 Correct 99 ms 182380 KB Output is correct
18 Correct 100 ms 182380 KB Output is correct
19 Correct 95 ms 182252 KB Output is correct
20 Correct 97 ms 182380 KB Output is correct
21 Correct 97 ms 182360 KB Output is correct
22 Correct 99 ms 182252 KB Output is correct
23 Correct 99 ms 182380 KB Output is correct
24 Correct 112 ms 182380 KB Output is correct
25 Correct 117 ms 182380 KB Output is correct
26 Correct 98 ms 182380 KB Output is correct
27 Correct 107 ms 182380 KB Output is correct
28 Correct 101 ms 182380 KB Output is correct
29 Correct 98 ms 182252 KB Output is correct
30 Correct 96 ms 182252 KB Output is correct
31 Correct 100 ms 182380 KB Output is correct
32 Correct 99 ms 182252 KB Output is correct
33 Correct 100 ms 182316 KB Output is correct
34 Correct 106 ms 182508 KB Output is correct
35 Correct 136 ms 183020 KB Output is correct
36 Correct 98 ms 182380 KB Output is correct
37 Correct 138 ms 182892 KB Output is correct
38 Correct 164 ms 183532 KB Output is correct
39 Correct 154 ms 183524 KB Output is correct
40 Correct 157 ms 183404 KB Output is correct
41 Correct 156 ms 183404 KB Output is correct
42 Correct 101 ms 183020 KB Output is correct
43 Correct 121 ms 183020 KB Output is correct
44 Correct 101 ms 183020 KB Output is correct
45 Correct 140 ms 183276 KB Output is correct
46 Correct 140 ms 183276 KB Output is correct
47 Correct 234 ms 183532 KB Output is correct
48 Correct 109 ms 183148 KB Output is correct
49 Correct 103 ms 183148 KB Output is correct
50 Correct 100 ms 182892 KB Output is correct
51 Correct 167 ms 183532 KB Output is correct
52 Correct 193 ms 183660 KB Output is correct
53 Correct 116 ms 183532 KB Output is correct
54 Correct 98 ms 182252 KB Output is correct
55 Correct 98 ms 182380 KB Output is correct
56 Correct 105 ms 183660 KB Output is correct
57 Correct 139 ms 182360 KB Output is correct
58 Correct 106 ms 182892 KB Output is correct
59 Correct 107 ms 183020 KB Output is correct
60 Correct 114 ms 183032 KB Output is correct
61 Correct 232 ms 183020 KB Output is correct
62 Correct 198 ms 183788 KB Output is correct
63 Correct 334 ms 183168 KB Output is correct
64 Correct 473 ms 183384 KB Output is correct
65 Correct 662 ms 183420 KB Output is correct
66 Correct 704 ms 183404 KB Output is correct
67 Correct 721 ms 183372 KB Output is correct