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Submission #1052853

# Submission time Handle Problem Language Result Execution time Memory
1052853 2024-08-11T04:41:53 Z Faisal_Saqib Trains (BOI24_trains) C++17
21 / 100
 177 ms 860 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 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 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 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 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
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 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 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 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 9 ms 668 KB Output is correct
21 Correct 0 ms 408 KB Output is correct
22 Correct 2 ms 600 KB Output is correct
23 Correct 60 ms 604 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 5 ms 604 KB Output is correct
26 Correct 34 ms 348 KB Output is correct
27 Correct 132 ms 600 KB Output is correct
28 Correct 19 ms 604 KB Output is correct
29 Correct 165 ms 668 KB Output is correct
30 Correct 1 ms 604 KB Output is correct
31 Correct 83 ms 672 KB Output is correct
32 Correct 177 ms 848 KB Output is correct
33 Correct 2 ms 600 KB Output is correct
34 Correct 1 ms 612 KB Output is correct
35 Correct 1 ms 856 KB Output is correct
36 Correct 8 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 60 ms 604 KB Output is correct
3 Correct 33 ms 348 KB Output is correct
4 Correct 120 ms 604 KB Output is correct
5 Runtime error 1 ms 856 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 1 ms 860 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 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 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 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 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 9 ms 668 KB Output is correct
21 Correct 0 ms 408 KB Output is correct
22 Correct 2 ms 600 KB Output is correct
23 Correct 60 ms 604 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 5 ms 604 KB Output is correct
26 Correct 34 ms 348 KB Output is correct
27 Correct 132 ms 600 KB Output is correct
28 Correct 19 ms 604 KB Output is correct
29 Correct 165 ms 668 KB Output is correct
30 Correct 1 ms 604 KB Output is correct
31 Correct 83 ms 672 KB Output is correct
32 Correct 177 ms 848 KB Output is correct
33 Correct 2 ms 600 KB Output is correct
34 Correct 1 ms 612 KB Output is correct
35 Correct 1 ms 856 KB Output is correct
36 Correct 8 ms 604 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 60 ms 604 KB Output is correct
39 Correct 33 ms 348 KB Output is correct
40 Correct 120 ms 604 KB Output is correct
41 Runtime error 1 ms 856 KB Execution killed with signal 11
42 Halted 0 ms 0 KB -