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Submission #1052846

# Submission time Handle Problem Language Result Execution time Memory
1052846 2024-08-11T04:35:48 Z vjudge1 Trains (BOI24_trains) C++17
21 / 100
 165 ms 1408 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define vll vector<ll>
#define all(x) begin(x),end(x)
#define pb push_back

const int N=1e4+10,mod=1e9+7;
ll ways[N],suf[N],d[N],x[N];
void solve()
{
    ll n;
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        cin>>d[i]>>x[i];
        ways[i]=1;
    }
    for(int i=n;i>=1;i--)
    {
        if(d[i]==0)continue;
        for(int t=1;t<=x[i] and (i+(d[i]*t))<=n;t++)
        {
            ways[i]=(ways[i]+ways[i+(d[i]*t)])%mod;
        }
    }
    cout<<ways[1]%mod<<endl;
}

int main()
{
	cin.tie(0);cout.tie(0);
	ios::sync_with_stdio(0);
	int t=1;
	// cin>>t;
	while(t--)
		solve();
}

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 344 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 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 464 KB Output is correct
13 Correct 0 ms 464 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 396 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
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 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 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 464 KB Output is correct
13 Correct 0 ms 464 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 396 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 10 ms 604 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 2 ms 600 KB Output is correct
23 Correct 59 ms 648 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 5 ms 604 KB Output is correct
26 Correct 33 ms 612 KB Output is correct
27 Correct 120 ms 604 KB Output is correct
28 Correct 20 ms 604 KB Output is correct
29 Correct 165 ms 816 KB Output is correct
30 Correct 1 ms 604 KB Output is correct
31 Correct 83 ms 792 KB Output is correct
32 Correct 164 ms 600 KB Output is correct
33 Correct 2 ms 604 KB Output is correct
34 Correct 1 ms 604 KB Output is correct
35 Correct 1 ms 604 KB Output is correct
36 Correct 9 ms 604 KB Output is correct

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 61 ms 604 KB Output is correct
3 Correct 34 ms 604 KB Output is correct
4 Correct 120 ms 600 KB Output is correct
5 Runtime error 2 ms 1116 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -

Subtask #4
0 / 34.0

# Verdict Execution time Memory Grader output
1 Runtime error 2 ms 1408 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #5
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 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 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 464 KB Output is correct
13 Correct 0 ms 464 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 396 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 10 ms 604 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 2 ms 600 KB Output is correct
23 Correct 59 ms 648 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 5 ms 604 KB Output is correct
26 Correct 33 ms 612 KB Output is correct
27 Correct 120 ms 604 KB Output is correct
28 Correct 20 ms 604 KB Output is correct
29 Correct 165 ms 816 KB Output is correct
30 Correct 1 ms 604 KB Output is correct
31 Correct 83 ms 792 KB Output is correct
32 Correct 164 ms 600 KB Output is correct
33 Correct 2 ms 604 KB Output is correct
34 Correct 1 ms 604 KB Output is correct
35 Correct 1 ms 604 KB Output is correct
36 Correct 9 ms 604 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 61 ms 604 KB Output is correct
39 Correct 34 ms 604 KB Output is correct
40 Correct 120 ms 600 KB Output is correct
41 Runtime error 2 ms 1116 KB Execution killed with signal 11
42 Halted 0 ms 0 KB -