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Submission #991341

# Submission time Handle Problem Language Result Execution time Memory
991341 2024-06-02T06:58:29 Z Andrey Trains (BOI24_trains) C++14
58 / 100
 111 ms 317012 KB 
#include<bits/stdc++.h>
using namespace std;

long long bruh[100001][400];
const long long MOD = 1e9+7;

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    long long n,a,b;
    cin >> n;
    vector<pair<long long,long long>> haha(n+1);
    for(long long i = 0; i < n; i++) {
        cin >> a >> b;
        haha[i] = {a,b};
    }
    reverse(haha.begin(),haha.end());
    vector<long long> dp(n+1,1);
    dp[0] = 0;
    for(long long i = 0; i < 400; i++) {
        bruh[0][i] = 0;
    }
    for(long long i = 1; i <= n; i++) {
        a = haha[i].first;
        b = haha[i].second;
        if(a*a <= n) {
            if(i > a) {
                dp[i]+=bruh[i-a][a];
                dp[i]%=MOD;
            }
            if(i > a*(b+1)) {
                dp[i]-=bruh[i-a*(b+1)][a];
                dp[i]+=MOD;
                dp[i]%=MOD;
            }
        }
        else {
            for(long long j = i-a; j >= max(0LL,j-a*b); j-=a) {
                dp[i]+=dp[j];
                dp[i]%=MOD;
            }
        }
        for(long long j = 1; j*j <= n; j++) {
            if(j <= i) {
                bruh[i][j] = (bruh[i-j][j]+dp[i])%MOD;
            }
            else {
                bruh[i][j] = dp[i];
            }
        }
    }
    cout << dp[n];
    return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 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 0 ms 348 KB Output is correct
9 Correct 1 ms 460 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 460 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 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 0 ms 348 KB Output is correct

Subtask #2
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 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 0 ms 348 KB Output is correct
9 Correct 1 ms 460 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 460 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 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 0 ms 348 KB Output is correct
20 Correct 7 ms 27480 KB Output is correct
21 Incorrect 2 ms 10844 KB Output isn't correct
22 Halted 0 ms 0 KB -

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 5 ms 21084 KB Output is correct
3 Correct 3 ms 14940 KB Output is correct
4 Correct 5 ms 27484 KB Output is correct
5 Correct 66 ms 244396 KB Output is correct
6 Correct 90 ms 315732 KB Output is correct
7 Correct 91 ms 315728 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 7 ms 33628 KB Output is correct
12 Correct 111 ms 315880 KB Output is correct
13 Correct 1 ms 512 KB Output is correct
14 Correct 6 ms 33628 KB Output is correct
15 Correct 90 ms 315768 KB Output is correct

Subtask #4
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 153444 KB Output is correct
2 Correct 29 ms 127068 KB Output is correct
3 Correct 89 ms 317012 KB Output is correct
4 Correct 65 ms 228692 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 6 ms 33628 KB Output is correct
8 Correct 93 ms 316940 KB Output is correct

Subtask #5
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 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 0 ms 348 KB Output is correct
9 Correct 1 ms 460 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 460 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 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 0 ms 348 KB Output is correct
20 Correct 7 ms 27480 KB Output is correct
21 Incorrect 2 ms 10844 KB Output isn't correct
22 Halted 0 ms 0 KB -