| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 1052918 |
2024-08-11T05:57:39 Z |
vjudge1 |
Trains (BOI24_trains) |
C++17 |
|
474 ms |
288128 KB |
#include<bits/stdc++.h>
using namespace std;
const int mod = 1'000'000'007;
const int SQ = 300, N = 100'000 + 5;
vector<int> chains[SQ][SQ];
int n, d[N], x[N], cnt[N], tnt[N][SQ];
int main()
{
cin >> n;
for(int i = 1; i <= n; i ++)
cin >> d[i] >> x[i];
for(int i = n; i >= 1; i --)
for(int j = 1; j < SQ; j++)
chains[j][i % j].push_back(i);
cnt[1] = 1;
int ans = 0;
for(int i = 1; i <= n; i ++)
{
for(int j = 1; j < SQ; j++)
cnt[i] = (cnt[i] + tnt[i][j]) % mod;
ans = (ans + cnt[i]) % mod;
for(int j = 1; j < SQ; j++)
{
chains[j][i % j].pop_back();
if(chains[j][i % j].size())
tnt[i + j][j] = (tnt[i + j][j] + tnt[i][j]) % mod;
}
if(d[i] == 0) continue;
if(d[i] >= SQ)
{
for(int k = i + d[i]; k <= n; k += d[i])
cnt[k] = (cnt[i] + cnt[k]) % mod;
}
else
{
x[i] = min(x[i], (n - i) / d[i]) + 1;
if(chains[d[i]][i % d[i]].size())
tnt[i + d[i]][d[i]] = (tnt[i + d[i]][d[i]] + cnt[i]) % mod;
if(x[i] * d[i] + i <= n)
tnt[x[i] * d[i] + i][d[i]] = (tnt[x[i] * d[i] + i][d[i]] + mod - cnt[i]) % mod;
}
}
cout << ans << endl;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
3928 KB |
Output is correct |
| 2 |
Correct |
1 ms |
3928 KB |
Output is correct |
| 3 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 4 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 5 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 6 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 7 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 8 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 9 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 10 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 11 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 12 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 13 |
Correct |
1 ms |
4000 KB |
Output is correct |
| 14 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 15 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 16 |
Correct |
2 ms |
3928 KB |
Output is correct |
| 17 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 18 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 19 |
Correct |
1 ms |
3932 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
3928 KB |
Output is correct |
| 2 |
Correct |
1 ms |
3928 KB |
Output is correct |
| 3 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 4 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 5 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 6 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 7 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 8 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 9 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 10 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 11 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 12 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 13 |
Correct |
1 ms |
4000 KB |
Output is correct |
| 14 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 15 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 16 |
Correct |
2 ms |
3928 KB |
Output is correct |
| 17 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 18 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 19 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 20 |
Correct |
44 ms |
29004 KB |
Output is correct |
| 21 |
Incorrect |
21 ms |
13148 KB |
Output isn't correct |
| 22 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
4184 KB |
Output is correct |
| 2 |
Correct |
36 ms |
23440 KB |
Output is correct |
| 3 |
Correct |
28 ms |
17728 KB |
Output is correct |
| 4 |
Correct |
47 ms |
29780 KB |
Output is correct |
| 5 |
Correct |
341 ms |
231500 KB |
Output is correct |
| 6 |
Correct |
465 ms |
287944 KB |
Output is correct |
| 7 |
Correct |
474 ms |
287940 KB |
Output is correct |
| 8 |
Correct |
1 ms |
3928 KB |
Output is correct |
| 9 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 10 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 11 |
Correct |
57 ms |
34604 KB |
Output is correct |
| 12 |
Correct |
446 ms |
288060 KB |
Output is correct |
| 13 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 14 |
Correct |
58 ms |
34584 KB |
Output is correct |
| 15 |
Correct |
466 ms |
288128 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
227 ms |
144588 KB |
Output is correct |
| 2 |
Correct |
194 ms |
124712 KB |
Output is correct |
| 3 |
Correct |
466 ms |
287952 KB |
Output is correct |
| 4 |
Correct |
336 ms |
212944 KB |
Output is correct |
| 5 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 6 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 7 |
Correct |
54 ms |
34456 KB |
Output is correct |
| 8 |
Correct |
447 ms |
288108 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
3928 KB |
Output is correct |
| 2 |
Correct |
1 ms |
3928 KB |
Output is correct |
| 3 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 4 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 5 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 6 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 7 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 8 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 9 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 10 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 11 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 12 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 13 |
Correct |
1 ms |
4000 KB |
Output is correct |
| 14 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 15 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 16 |
Correct |
2 ms |
3928 KB |
Output is correct |
| 17 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 18 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 19 |
Correct |
1 ms |
3932 KB |
Output is correct |
| 20 |
Correct |
44 ms |
29004 KB |
Output is correct |
| 21 |
Incorrect |
21 ms |
13148 KB |
Output isn't correct |
| 22 |
Halted |
0 ms |
0 KB |
- |
