| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 1000157 |
2024-06-16T18:16:08 Z |
OAleksa |
Trains (BOI24_trains) |
C++14 |
|
97 ms |
8424 KB |
#include <bits/stdc++.h>
#define f first
#define s second
#define int long long
using namespace std;
const int N = 1e5 + 69;
const int B = 320;
const int mod = 1e9 + 7;
int n, d[N], x[N], dp[N];
vector<int> cnt[B];
vector<tuple<int, int, int>> who[N];
int add(int x, int y) {
x += y;
if (x >= mod)
x -= mod;
return x;
}
int sub(int x, int y) {
x -= y;
x = (x + 1000ll * mod) % mod;
return x;
}
signed main() {
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int tt = 1;
//cin >> tt;
while (tt--) {
cin >> n;
for (int i = 1;i <= n;i++) {
cin >> d[i] >> x[i];
x[i] = min(x[i], n);
}
for (int i = 1;i < B;i++)
cnt[i].resize(i);
dp[1] = 1;
for (int i = 1;i <= n;i++) {
for (int j = 1;j < B;j++) {
int x = i % j;
dp[i] = add(dp[i], cnt[j][x]);
}
if (d[i] >= B) {
for (int j = i + d[i], j1 = 1;j <= n && j1 <= x[i];j += d[i], j1++) {
dp[j] = add(dp[j], dp[i]);
}
}
else {
if (d[i] != 0) {
int when = i + x[i] * d[i];
if (when <= n)
who[when].push_back({d[i], i % d[i], dp[i]});
cnt[d[i]][i % d[i]] = add(cnt[d[i]][i % d[i]], dp[i]);
}
}
for (auto j : who[i]) {
int a, b, c;
tie(a, b, c) = j;
cnt[a][b] = sub(cnt[a][b], c);
}
}
int ans = 0;
for (int i = 1;i <= n;i++)
ans = add(ans, dp[i]);
cout << ans;
}
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
4952 KB |
Output is correct |
| 2 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 3 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 4 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 5 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 6 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 7 |
Correct |
1 ms |
5036 KB |
Output is correct |
| 8 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 9 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 10 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 11 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 12 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 13 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 14 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 15 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 16 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 17 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 18 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 19 |
Correct |
1 ms |
4956 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
4952 KB |
Output is correct |
| 2 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 3 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 4 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 5 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 6 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 7 |
Correct |
1 ms |
5036 KB |
Output is correct |
| 8 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 9 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 10 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 11 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 12 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 13 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 14 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 15 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 16 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 17 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 18 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 19 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 20 |
Correct |
9 ms |
5212 KB |
Output is correct |
| 21 |
Correct |
4 ms |
4956 KB |
Output is correct |
| 22 |
Correct |
9 ms |
4956 KB |
Output is correct |
| 23 |
Correct |
7 ms |
4952 KB |
Output is correct |
| 24 |
Correct |
4 ms |
4956 KB |
Output is correct |
| 25 |
Correct |
8 ms |
5156 KB |
Output is correct |
| 26 |
Correct |
5 ms |
4956 KB |
Output is correct |
| 27 |
Correct |
8 ms |
4956 KB |
Output is correct |
| 28 |
Correct |
10 ms |
4952 KB |
Output is correct |
| 29 |
Correct |
10 ms |
4956 KB |
Output is correct |
| 30 |
Correct |
10 ms |
5156 KB |
Output is correct |
| 31 |
Correct |
10 ms |
4956 KB |
Output is correct |
| 32 |
Correct |
10 ms |
5156 KB |
Output is correct |
| 33 |
Correct |
11 ms |
5208 KB |
Output is correct |
| 34 |
Correct |
9 ms |
5144 KB |
Output is correct |
| 35 |
Correct |
9 ms |
4956 KB |
Output is correct |
| 36 |
Correct |
9 ms |
5152 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 2 |
Correct |
7 ms |
4956 KB |
Output is correct |
| 3 |
Correct |
5 ms |
4956 KB |
Output is correct |
| 4 |
Correct |
8 ms |
4956 KB |
Output is correct |
| 5 |
Correct |
69 ms |
7764 KB |
Output is correct |
| 6 |
Correct |
84 ms |
5468 KB |
Output is correct |
| 7 |
Correct |
86 ms |
5832 KB |
Output is correct |
| 8 |
Correct |
1 ms |
4952 KB |
Output is correct |
| 9 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 10 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 11 |
Correct |
10 ms |
4956 KB |
Output is correct |
| 12 |
Correct |
86 ms |
5552 KB |
Output is correct |
| 13 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 14 |
Correct |
10 ms |
4956 KB |
Output is correct |
| 15 |
Correct |
86 ms |
5468 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
44 ms |
4952 KB |
Output is correct |
| 2 |
Correct |
36 ms |
5200 KB |
Output is correct |
| 3 |
Correct |
86 ms |
5468 KB |
Output is correct |
| 4 |
Correct |
65 ms |
5208 KB |
Output is correct |
| 5 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 6 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 7 |
Correct |
9 ms |
5148 KB |
Output is correct |
| 8 |
Correct |
86 ms |
5516 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
4952 KB |
Output is correct |
| 2 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 3 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 4 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 5 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 6 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 7 |
Correct |
1 ms |
5036 KB |
Output is correct |
| 8 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 9 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 10 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 11 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 12 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 13 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 14 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 15 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 16 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 17 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 18 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 19 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 20 |
Correct |
9 ms |
5212 KB |
Output is correct |
| 21 |
Correct |
4 ms |
4956 KB |
Output is correct |
| 22 |
Correct |
9 ms |
4956 KB |
Output is correct |
| 23 |
Correct |
7 ms |
4952 KB |
Output is correct |
| 24 |
Correct |
4 ms |
4956 KB |
Output is correct |
| 25 |
Correct |
8 ms |
5156 KB |
Output is correct |
| 26 |
Correct |
5 ms |
4956 KB |
Output is correct |
| 27 |
Correct |
8 ms |
4956 KB |
Output is correct |
| 28 |
Correct |
10 ms |
4952 KB |
Output is correct |
| 29 |
Correct |
10 ms |
4956 KB |
Output is correct |
| 30 |
Correct |
10 ms |
5156 KB |
Output is correct |
| 31 |
Correct |
10 ms |
4956 KB |
Output is correct |
| 32 |
Correct |
10 ms |
5156 KB |
Output is correct |
| 33 |
Correct |
11 ms |
5208 KB |
Output is correct |
| 34 |
Correct |
9 ms |
5144 KB |
Output is correct |
| 35 |
Correct |
9 ms |
4956 KB |
Output is correct |
| 36 |
Correct |
9 ms |
5152 KB |
Output is correct |
| 37 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 38 |
Correct |
7 ms |
4956 KB |
Output is correct |
| 39 |
Correct |
5 ms |
4956 KB |
Output is correct |
| 40 |
Correct |
8 ms |
4956 KB |
Output is correct |
| 41 |
Correct |
69 ms |
7764 KB |
Output is correct |
| 42 |
Correct |
84 ms |
5468 KB |
Output is correct |
| 43 |
Correct |
86 ms |
5832 KB |
Output is correct |
| 44 |
Correct |
1 ms |
4952 KB |
Output is correct |
| 45 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 46 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 47 |
Correct |
10 ms |
4956 KB |
Output is correct |
| 48 |
Correct |
86 ms |
5552 KB |
Output is correct |
| 49 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 50 |
Correct |
10 ms |
4956 KB |
Output is correct |
| 51 |
Correct |
86 ms |
5468 KB |
Output is correct |
| 52 |
Correct |
44 ms |
4952 KB |
Output is correct |
| 53 |
Correct |
36 ms |
5200 KB |
Output is correct |
| 54 |
Correct |
86 ms |
5468 KB |
Output is correct |
| 55 |
Correct |
65 ms |
5208 KB |
Output is correct |
| 56 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 57 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 58 |
Correct |
9 ms |
5148 KB |
Output is correct |
| 59 |
Correct |
86 ms |
5516 KB |
Output is correct |
| 60 |
Correct |
72 ms |
5448 KB |
Output is correct |
| 61 |
Correct |
89 ms |
5468 KB |
Output is correct |
| 62 |
Correct |
93 ms |
8424 KB |
Output is correct |
| 63 |
Correct |
85 ms |
5464 KB |
Output is correct |
| 64 |
Correct |
90 ms |
5468 KB |
Output is correct |
| 65 |
Correct |
97 ms |
5464 KB |
Output is correct |
| 66 |
Correct |
85 ms |
5464 KB |
Output is correct |
| 67 |
Correct |
87 ms |
5464 KB |
Output is correct |
| 68 |
Correct |
89 ms |
5548 KB |
Output is correct |
| 69 |
Correct |
94 ms |
7804 KB |
Output is correct |
| 70 |
Correct |
86 ms |
5548 KB |
Output is correct |
| 71 |
Correct |
86 ms |
5468 KB |
Output is correct |
| 72 |
Correct |
85 ms |
5468 KB |
Output is correct |
