| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 1052855 |
2024-08-11T04:44:31 Z |
vjudge1 |
Trains (BOI24_trains) |
C++17 |
|
2000 ms |
4700 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=1e5+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;
}
suf[n+1]=0;
for(int i=n;i>=1;i--)
{
if(d[i]==1)
{
int j=min(n,i+x[i]);
ways[i] =(((suf[i+1]-suf[j+1])%mod)+mod)%mod;
ways[i] = (ways[i]+1)%mod;
}
else{
if(d[i]>1){
for(int t=1;t<=x[i] and (i+(d[i]*t))<=n;t++)
{
ways[i]=(ways[i]+ways[i+(d[i]*t)])%mod;
}
}
}
suf[i]=(suf[i+1]+ways[i])%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();
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 10 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 12 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 15 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 16 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 17 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 18 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 19 |
Correct |
0 ms |
2396 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 10 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 12 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 15 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 16 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 17 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 18 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 19 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 20 |
Correct |
9 ms |
2396 KB |
Output is correct |
| 21 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 22 |
Correct |
2 ms |
2652 KB |
Output is correct |
| 23 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 24 |
Correct |
1 ms |
2520 KB |
Output is correct |
| 25 |
Correct |
5 ms |
2652 KB |
Output is correct |
| 26 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 27 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 28 |
Correct |
19 ms |
2672 KB |
Output is correct |
| 29 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 30 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 31 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 32 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 33 |
Correct |
2 ms |
2652 KB |
Output is correct |
| 34 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 35 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 36 |
Correct |
7 ms |
2676 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
1 ms |
2584 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 5 |
Correct |
5 ms |
3164 KB |
Output is correct |
| 6 |
Correct |
8 ms |
3540 KB |
Output is correct |
| 7 |
Correct |
8 ms |
3420 KB |
Output is correct |
| 8 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 12 |
Correct |
9 ms |
3416 KB |
Output is correct |
| 13 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
2 ms |
2652 KB |
Output is correct |
| 15 |
Correct |
10 ms |
3408 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
737 ms |
2904 KB |
Output is correct |
| 2 |
Correct |
525 ms |
3420 KB |
Output is correct |
| 3 |
Execution timed out |
2073 ms |
4700 KB |
Time limit exceeded |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 10 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 12 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 15 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 16 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 17 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 18 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 19 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 20 |
Correct |
9 ms |
2396 KB |
Output is correct |
| 21 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 22 |
Correct |
2 ms |
2652 KB |
Output is correct |
| 23 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 24 |
Correct |
1 ms |
2520 KB |
Output is correct |
| 25 |
Correct |
5 ms |
2652 KB |
Output is correct |
| 26 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 27 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 28 |
Correct |
19 ms |
2672 KB |
Output is correct |
| 29 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 30 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 31 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 32 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 33 |
Correct |
2 ms |
2652 KB |
Output is correct |
| 34 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 35 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 36 |
Correct |
7 ms |
2676 KB |
Output is correct |
| 37 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 38 |
Correct |
1 ms |
2584 KB |
Output is correct |
| 39 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 40 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 41 |
Correct |
5 ms |
3164 KB |
Output is correct |
| 42 |
Correct |
8 ms |
3540 KB |
Output is correct |
| 43 |
Correct |
8 ms |
3420 KB |
Output is correct |
| 44 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 45 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 46 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 47 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 48 |
Correct |
9 ms |
3416 KB |
Output is correct |
| 49 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 50 |
Correct |
2 ms |
2652 KB |
Output is correct |
| 51 |
Correct |
10 ms |
3408 KB |
Output is correct |
| 52 |
Correct |
737 ms |
2904 KB |
Output is correct |
| 53 |
Correct |
525 ms |
3420 KB |
Output is correct |
| 54 |
Execution timed out |
2073 ms |
4700 KB |
Time limit exceeded |
| 55 |
Halted |
0 ms |
0 KB |
- |
