| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 970330 |
2024-04-26T11:12:06 Z |
duckindog |
Boat (APIO16_boat) |
C++17 |
|
486 ms |
2648 KB |
#include <bits/stdc++.h>
using namespace std;
const int N = 500 + 10,
M = 1'000'000'007;
int n;
int a[N], b[N];
int f[1'010][N];
void add(auto& x, const auto& y) {
x += y;
if (x >= M) x -= M;
}
int powder(int a, int b) {
int ret = 1;
while (b) {
if (b & 1) ret = 1ll * ret * a % M;
a = 1ll * a * a % M;
b >>= 1;
}
return ret;
}
int inv[N];
int32_t main() {
cin.tie(0)->sync_with_stdio(0);
cin >> n;
for (int i = 1; i <= n; ++i) cin >> a[i] >> b[i];
for (int i = 2; i <= n + 1; ++i) inv[i] = powder(i, M - 2);
vector<int> rrh(a + 1, a + n + 1);
for (int i = 1; i <= n; ++i) rrh.push_back(b[i] + 1);
sort(rrh.begin(), rrh.end());
rrh.resize(unique(rrh.begin(), rrh.end()) - rrh.begin());
for (int i = 0; i < rrh.size(); ++i) f[i][0] = 1;
for (int i = 1; i < rrh.size(); ++i) {
for (int j = 1; j <= n; ++j) {
auto& ret = f[i][j];
ret = f[i - 1][j];
if (a[j] > rrh[i - 1] || rrh[i - 1] > b[j]) continue;
int len = rrh[i] - rrh[i - 1];
int mul = len, cnt = 1;
for (int t = j - 1; t >= 0; --t) {
add(ret, 1ll * f[i - 1][t] * mul % M);
if (a[t] <= rrh[i - 1] && rrh[i - 1] <= b[t]) {
mul = 1ll * mul * (len + cnt) % M * inv[cnt + 1] % M;
cnt += 1;
}
}
}
}
int answer = 0;
for (int i = 1; i <= n; ++i) add(answer, f[rrh.size() - 1][i]);
cout << answer << "\n";
}
Compilation message
boat.cpp:11:10: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
11 | void add(auto& x, const auto& y) {
| ^~~~
boat.cpp:11:25: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
11 | void add(auto& x, const auto& y) {
| ^~~~
boat.cpp: In function 'int32_t main()':
boat.cpp:41:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
41 | for (int i = 0; i < rrh.size(); ++i) f[i][0] = 1;
| ~~^~~~~~~~~~~~
boat.cpp:42:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
42 | for (int i = 1; i < rrh.size(); ++i) {
| ~~^~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
3 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
3 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
2 ms |
2648 KB |
Output is correct |
| 12 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 15 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 16 |
Correct |
1 ms |
604 KB |
Output is correct |
| 17 |
Correct |
1 ms |
604 KB |
Output is correct |
| 18 |
Correct |
1 ms |
604 KB |
Output is correct |
| 19 |
Correct |
1 ms |
852 KB |
Output is correct |
| 20 |
Correct |
2 ms |
600 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
3 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
3 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
2 ms |
2648 KB |
Output is correct |
| 12 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 15 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 16 |
Correct |
1 ms |
604 KB |
Output is correct |
| 17 |
Correct |
1 ms |
604 KB |
Output is correct |
| 18 |
Correct |
1 ms |
604 KB |
Output is correct |
| 19 |
Correct |
1 ms |
852 KB |
Output is correct |
| 20 |
Correct |
2 ms |
600 KB |
Output is correct |
| 21 |
Correct |
214 ms |
2268 KB |
Output is correct |
| 22 |
Correct |
216 ms |
2300 KB |
Output is correct |
| 23 |
Correct |
188 ms |
2264 KB |
Output is correct |
| 24 |
Correct |
202 ms |
2248 KB |
Output is correct |
| 25 |
Correct |
206 ms |
2260 KB |
Output is correct |
| 26 |
Correct |
416 ms |
2216 KB |
Output is correct |
| 27 |
Correct |
428 ms |
2384 KB |
Output is correct |
| 28 |
Correct |
417 ms |
2140 KB |
Output is correct |
| 29 |
Correct |
412 ms |
2140 KB |
Output is correct |
| 30 |
Correct |
3 ms |
2396 KB |
Output is correct |
| 31 |
Correct |
3 ms |
2396 KB |
Output is correct |
| 32 |
Correct |
3 ms |
2396 KB |
Output is correct |
| 33 |
Correct |
3 ms |
2396 KB |
Output is correct |
| 34 |
Correct |
3 ms |
2392 KB |
Output is correct |
| 35 |
Correct |
3 ms |
2396 KB |
Output is correct |
| 36 |
Correct |
4 ms |
2396 KB |
Output is correct |
| 37 |
Correct |
3 ms |
2392 KB |
Output is correct |
| 38 |
Correct |
3 ms |
2396 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
860 KB |
Output is correct |
| 2 |
Correct |
2 ms |
860 KB |
Output is correct |
| 3 |
Correct |
2 ms |
860 KB |
Output is correct |
| 4 |
Correct |
2 ms |
860 KB |
Output is correct |
| 5 |
Correct |
3 ms |
860 KB |
Output is correct |
| 6 |
Correct |
4 ms |
860 KB |
Output is correct |
| 7 |
Correct |
4 ms |
860 KB |
Output is correct |
| 8 |
Correct |
4 ms |
860 KB |
Output is correct |
| 9 |
Correct |
4 ms |
860 KB |
Output is correct |
| 10 |
Correct |
4 ms |
860 KB |
Output is correct |
| 11 |
Correct |
3 ms |
860 KB |
Output is correct |
| 12 |
Correct |
2 ms |
1116 KB |
Output is correct |
| 13 |
Correct |
2 ms |
860 KB |
Output is correct |
| 14 |
Correct |
2 ms |
860 KB |
Output is correct |
| 15 |
Correct |
2 ms |
860 KB |
Output is correct |
| 16 |
Correct |
2 ms |
604 KB |
Output is correct |
| 17 |
Correct |
2 ms |
604 KB |
Output is correct |
| 18 |
Correct |
2 ms |
604 KB |
Output is correct |
| 19 |
Correct |
2 ms |
856 KB |
Output is correct |
| 20 |
Correct |
2 ms |
600 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
3 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
3 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
2 ms |
2648 KB |
Output is correct |
| 12 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 15 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 16 |
Correct |
1 ms |
604 KB |
Output is correct |
| 17 |
Correct |
1 ms |
604 KB |
Output is correct |
| 18 |
Correct |
1 ms |
604 KB |
Output is correct |
| 19 |
Correct |
1 ms |
852 KB |
Output is correct |
| 20 |
Correct |
2 ms |
600 KB |
Output is correct |
| 21 |
Correct |
214 ms |
2268 KB |
Output is correct |
| 22 |
Correct |
216 ms |
2300 KB |
Output is correct |
| 23 |
Correct |
188 ms |
2264 KB |
Output is correct |
| 24 |
Correct |
202 ms |
2248 KB |
Output is correct |
| 25 |
Correct |
206 ms |
2260 KB |
Output is correct |
| 26 |
Correct |
416 ms |
2216 KB |
Output is correct |
| 27 |
Correct |
428 ms |
2384 KB |
Output is correct |
| 28 |
Correct |
417 ms |
2140 KB |
Output is correct |
| 29 |
Correct |
412 ms |
2140 KB |
Output is correct |
| 30 |
Correct |
3 ms |
2396 KB |
Output is correct |
| 31 |
Correct |
3 ms |
2396 KB |
Output is correct |
| 32 |
Correct |
3 ms |
2396 KB |
Output is correct |
| 33 |
Correct |
3 ms |
2396 KB |
Output is correct |
| 34 |
Correct |
3 ms |
2392 KB |
Output is correct |
| 35 |
Correct |
3 ms |
2396 KB |
Output is correct |
| 36 |
Correct |
4 ms |
2396 KB |
Output is correct |
| 37 |
Correct |
3 ms |
2392 KB |
Output is correct |
| 38 |
Correct |
3 ms |
2396 KB |
Output is correct |
| 39 |
Correct |
2 ms |
860 KB |
Output is correct |
| 40 |
Correct |
2 ms |
860 KB |
Output is correct |
| 41 |
Correct |
2 ms |
860 KB |
Output is correct |
| 42 |
Correct |
2 ms |
860 KB |
Output is correct |
| 43 |
Correct |
3 ms |
860 KB |
Output is correct |
| 44 |
Correct |
4 ms |
860 KB |
Output is correct |
| 45 |
Correct |
4 ms |
860 KB |
Output is correct |
| 46 |
Correct |
4 ms |
860 KB |
Output is correct |
| 47 |
Correct |
4 ms |
860 KB |
Output is correct |
| 48 |
Correct |
4 ms |
860 KB |
Output is correct |
| 49 |
Correct |
3 ms |
860 KB |
Output is correct |
| 50 |
Correct |
2 ms |
1116 KB |
Output is correct |
| 51 |
Correct |
2 ms |
860 KB |
Output is correct |
| 52 |
Correct |
2 ms |
860 KB |
Output is correct |
| 53 |
Correct |
2 ms |
860 KB |
Output is correct |
| 54 |
Correct |
2 ms |
604 KB |
Output is correct |
| 55 |
Correct |
2 ms |
604 KB |
Output is correct |
| 56 |
Correct |
2 ms |
604 KB |
Output is correct |
| 57 |
Correct |
2 ms |
856 KB |
Output is correct |
| 58 |
Correct |
2 ms |
600 KB |
Output is correct |
| 59 |
Correct |
240 ms |
2460 KB |
Output is correct |
| 60 |
Correct |
230 ms |
2452 KB |
Output is correct |
| 61 |
Correct |
207 ms |
2396 KB |
Output is correct |
| 62 |
Correct |
231 ms |
2396 KB |
Output is correct |
| 63 |
Correct |
225 ms |
2456 KB |
Output is correct |
| 64 |
Correct |
479 ms |
2452 KB |
Output is correct |
| 65 |
Correct |
486 ms |
2456 KB |
Output is correct |
| 66 |
Correct |
480 ms |
2460 KB |
Output is correct |
| 67 |
Correct |
481 ms |
2456 KB |
Output is correct |
| 68 |
Correct |
479 ms |
2396 KB |
Output is correct |
| 69 |
Correct |
205 ms |
2456 KB |
Output is correct |
| 70 |
Correct |
192 ms |
2392 KB |
Output is correct |
| 71 |
Correct |
188 ms |
2456 KB |
Output is correct |
| 72 |
Correct |
200 ms |
2396 KB |
Output is correct |
| 73 |
Correct |
207 ms |
2452 KB |
Output is correct |
| 74 |
Correct |
47 ms |
820 KB |
Output is correct |
| 75 |
Correct |
43 ms |
604 KB |
Output is correct |
| 76 |
Correct |
47 ms |
604 KB |
Output is correct |
| 77 |
Correct |
46 ms |
600 KB |
Output is correct |
| 78 |
Correct |
46 ms |
820 KB |
Output is correct |
