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Submission #1084757

# Submission time Handle Problem Language Result Execution time Memory
1084757 2024-09-06T23:14:10 Z zxcigan Trains (BOI24_trains) C++17
21 / 100
 2000 ms 1496 KB 
#include <bits/stdc++.h>

using namespace std;
using ll = long long;
#define int long long
const int N = 2e5;
const int mod = 1e9 + 7;
const int B = 1;
int dp[N];
int32_t main() {
#ifdef LOCAL
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif // LOCAL
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin >> n;
    dp[1] = 1;
    int s = 0;
    vector<vector<int>> add (B + 1, vector<int> (B + 1, 0));
    set<array<int,4>> st;
    for (int i = 1; i <= n; ++i) {
        int x, d;
        cin >> d >> x;
        for (int j = 1; j <= B; ++j) {
            (dp[i] += add[j][i % j]) %= mod;
        }
        if (x && d) {
            if (d >= B) {
                for (int j = 1; j <= x; ++j) {
                    if (i + d * j > n) break;
                    (dp[i + d * j] += dp[i]) %= mod;
                }
            } else {
                (add[d][i % d] += dp[i]) %= mod;
                st.insert ({i + x * d, d, i % d, dp[i]});
            }
        }
        while ((int)st.size() && (*st.begin())[0] == i) {
            array<int,4> v = (*st.begin());
            add[v[1]][v[2]] -= v[3];
            while (add[v[1]][v[2]] < 0) add[v[1]][v[2]] += mod;
            st.erase (st.begin());
        }
        (s += dp[i]) %= mod;
    }
    cout << s << '\n';
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 5 ms 344 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 3 ms 736 KB Output is correct
23 Correct 25 ms 344 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 3 ms 600 KB Output is correct
26 Correct 14 ms 544 KB Output is correct
27 Correct 49 ms 604 KB Output is correct
28 Correct 9 ms 600 KB Output is correct
29 Correct 67 ms 648 KB Output is correct
30 Correct 2 ms 604 KB Output is correct
31 Correct 41 ms 604 KB Output is correct
32 Correct 68 ms 604 KB Output is correct
33 Correct 2 ms 600 KB Output is correct
34 Correct 1 ms 604 KB Output is correct
35 Correct 2 ms 604 KB Output is correct
36 Correct 5 ms 604 KB Output is correct

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 26 ms 348 KB Output is correct
3 Correct 14 ms 600 KB Output is correct
4 Correct 48 ms 348 KB Output is correct
5 Correct 6 ms 860 KB Output is correct
6 Execution timed out 2097 ms 1496 KB Time limit exceeded
7 Halted 0 ms 0 KB -

Subtask #4
0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 456 ms 600 KB Output is correct
2 Correct 338 ms 604 KB Output is correct
3 Execution timed out 2080 ms 1116 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #5
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 5 ms 344 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 3 ms 736 KB Output is correct
23 Correct 25 ms 344 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 3 ms 600 KB Output is correct
26 Correct 14 ms 544 KB Output is correct
27 Correct 49 ms 604 KB Output is correct
28 Correct 9 ms 600 KB Output is correct
29 Correct 67 ms 648 KB Output is correct
30 Correct 2 ms 604 KB Output is correct
31 Correct 41 ms 604 KB Output is correct
32 Correct 68 ms 604 KB Output is correct
33 Correct 2 ms 600 KB Output is correct
34 Correct 1 ms 604 KB Output is correct
35 Correct 2 ms 604 KB Output is correct
36 Correct 5 ms 604 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 26 ms 348 KB Output is correct
39 Correct 14 ms 600 KB Output is correct
40 Correct 48 ms 348 KB Output is correct
41 Correct 6 ms 860 KB Output is correct
42 Execution timed out 2097 ms 1496 KB Time limit exceeded
43 Halted 0 ms 0 KB -