| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 294033 |
2020-09-08T14:34:35 Z |
Shafin666 |
Boat (APIO16_boat) |
C++14 |
|
609 ms |
8440 KB |
#include <bits/stdc++.h>
#define pb push_back
#define pii pair<ll, ll>
#define nyan "(=^･ω･^=)"
#define read_input freopen("in.txt","r", stdin)
#define print_output freopen("out.txt","w", stdout)
typedef long long ll;
typedef long double ld;
using namespace std;
const ll mod = 1e9+7, maxn = 1e3+10;
ll l[maxn], r[maxn];
ll dp[maxn][maxn], sum[maxn][maxn];
ll ncr[maxn][maxn], inv[maxn];
vector<pii> edit;
vector<ll> v;
ll bigmod(ll a, ll b) {
if(b == 0) return 1;
ll x = bigmod(a, b/2);
x = (x * x) % mod;
if(b & 1) x = (x * a) % mod;
return x;
}
int main()
{
ll n; cin >> n;
for(ll i = 1; i <= n; i++) {
cin >> l[i] >> r[i];
v.pb(l[i]); v.pb(r[i]+1);
}
sort(v.begin(), v.end());
v.erase(unique(v.begin(), v.end()), v.end());
edit.pb({0, 0});
for(ll i = 0; i < (ll)v.size()-1; i++) {
edit.pb({v[i], v[i+1]-1});
}
ll m = edit.size() - 1;
for(ll i = 1; i <= n; i++) inv[i] = bigmod(i, mod-2);
dp[0][0] = 1;
for(ll i = 0; i <= m; i++) sum[0][i] = 1;
for(ll i = 1; i <= n; i++) {
for(ll j = 1; j <= m; j++) {
ll L = edit[j].second - edit[j].first + 1;
ll cnt = 1, mul = L;
if(!(l[i] <= edit[j].first && r[i] >= edit[j].second)) continue;
for(ll k = i-1; k >= 0; k--) {
dp[i][j] = (dp[i][j] + mul * sum[k][j-1]) % mod;
if(l[k] <= edit[j].first && r[k] >= edit[j].second) {
cnt++;
mul = (mul * (L + cnt - 1)) % mod;
mul = (mul * inv[cnt]) % mod;
}
}
}
for(ll j = 1; j <= m; j++)
sum[i][j] = (sum[i][j-1] + dp[i][j]) % mod;
}
ll ans = 0;
for(ll i = 1; i <= n; i++) {
for(ll j = 1; j <= m; j++)
ans = (ans + dp[i][j]) % mod;
}
cout << ans << endl;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
13 ms |
6272 KB |
Output is correct |
| 2 |
Correct |
13 ms |
6272 KB |
Output is correct |
| 3 |
Correct |
13 ms |
6272 KB |
Output is correct |
| 4 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 5 |
Correct |
13 ms |
6272 KB |
Output is correct |
| 6 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 7 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 8 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 9 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 10 |
Correct |
14 ms |
6400 KB |
Output is correct |
| 11 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 12 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 13 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 14 |
Correct |
14 ms |
6400 KB |
Output is correct |
| 15 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 16 |
Correct |
7 ms |
5120 KB |
Output is correct |
| 17 |
Correct |
7 ms |
5120 KB |
Output is correct |
| 18 |
Correct |
7 ms |
5120 KB |
Output is correct |
| 19 |
Correct |
7 ms |
5120 KB |
Output is correct |
| 20 |
Correct |
8 ms |
5120 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
13 ms |
6272 KB |
Output is correct |
| 2 |
Correct |
13 ms |
6272 KB |
Output is correct |
| 3 |
Correct |
13 ms |
6272 KB |
Output is correct |
| 4 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 5 |
Correct |
13 ms |
6272 KB |
Output is correct |
| 6 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 7 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 8 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 9 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 10 |
Correct |
14 ms |
6400 KB |
Output is correct |
| 11 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 12 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 13 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 14 |
Correct |
14 ms |
6400 KB |
Output is correct |
| 15 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 16 |
Correct |
7 ms |
5120 KB |
Output is correct |
| 17 |
Correct |
7 ms |
5120 KB |
Output is correct |
| 18 |
Correct |
7 ms |
5120 KB |
Output is correct |
| 19 |
Correct |
7 ms |
5120 KB |
Output is correct |
| 20 |
Correct |
8 ms |
5120 KB |
Output is correct |
| 21 |
Correct |
311 ms |
7548 KB |
Output is correct |
| 22 |
Correct |
272 ms |
7416 KB |
Output is correct |
| 23 |
Correct |
259 ms |
7288 KB |
Output is correct |
| 24 |
Correct |
271 ms |
7420 KB |
Output is correct |
| 25 |
Correct |
270 ms |
7416 KB |
Output is correct |
| 26 |
Correct |
544 ms |
8056 KB |
Output is correct |
| 27 |
Correct |
549 ms |
8056 KB |
Output is correct |
| 28 |
Correct |
532 ms |
8056 KB |
Output is correct |
| 29 |
Correct |
523 ms |
8056 KB |
Output is correct |
| 30 |
Correct |
14 ms |
6400 KB |
Output is correct |
| 31 |
Correct |
14 ms |
6400 KB |
Output is correct |
| 32 |
Correct |
17 ms |
6400 KB |
Output is correct |
| 33 |
Correct |
14 ms |
6400 KB |
Output is correct |
| 34 |
Correct |
14 ms |
6400 KB |
Output is correct |
| 35 |
Correct |
15 ms |
6272 KB |
Output is correct |
| 36 |
Correct |
15 ms |
6272 KB |
Output is correct |
| 37 |
Correct |
14 ms |
6272 KB |
Output is correct |
| 38 |
Correct |
14 ms |
6272 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 2 |
Correct |
3 ms |
1408 KB |
Output is correct |
| 3 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 4 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 5 |
Correct |
5 ms |
1408 KB |
Output is correct |
| 6 |
Correct |
6 ms |
1408 KB |
Output is correct |
| 7 |
Correct |
7 ms |
1408 KB |
Output is correct |
| 8 |
Correct |
6 ms |
1408 KB |
Output is correct |
| 9 |
Correct |
6 ms |
1408 KB |
Output is correct |
| 10 |
Correct |
6 ms |
1408 KB |
Output is correct |
| 11 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 12 |
Correct |
3 ms |
1408 KB |
Output is correct |
| 13 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 14 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 15 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 16 |
Correct |
3 ms |
1280 KB |
Output is correct |
| 17 |
Correct |
3 ms |
1280 KB |
Output is correct |
| 18 |
Correct |
3 ms |
1280 KB |
Output is correct |
| 19 |
Correct |
3 ms |
1280 KB |
Output is correct |
| 20 |
Correct |
4 ms |
1280 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
13 ms |
6272 KB |
Output is correct |
| 2 |
Correct |
13 ms |
6272 KB |
Output is correct |
| 3 |
Correct |
13 ms |
6272 KB |
Output is correct |
| 4 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 5 |
Correct |
13 ms |
6272 KB |
Output is correct |
| 6 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 7 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 8 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 9 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 10 |
Correct |
14 ms |
6400 KB |
Output is correct |
| 11 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 12 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 13 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 14 |
Correct |
14 ms |
6400 KB |
Output is correct |
| 15 |
Correct |
13 ms |
6400 KB |
Output is correct |
| 16 |
Correct |
7 ms |
5120 KB |
Output is correct |
| 17 |
Correct |
7 ms |
5120 KB |
Output is correct |
| 18 |
Correct |
7 ms |
5120 KB |
Output is correct |
| 19 |
Correct |
7 ms |
5120 KB |
Output is correct |
| 20 |
Correct |
8 ms |
5120 KB |
Output is correct |
| 21 |
Correct |
311 ms |
7548 KB |
Output is correct |
| 22 |
Correct |
272 ms |
7416 KB |
Output is correct |
| 23 |
Correct |
259 ms |
7288 KB |
Output is correct |
| 24 |
Correct |
271 ms |
7420 KB |
Output is correct |
| 25 |
Correct |
270 ms |
7416 KB |
Output is correct |
| 26 |
Correct |
544 ms |
8056 KB |
Output is correct |
| 27 |
Correct |
549 ms |
8056 KB |
Output is correct |
| 28 |
Correct |
532 ms |
8056 KB |
Output is correct |
| 29 |
Correct |
523 ms |
8056 KB |
Output is correct |
| 30 |
Correct |
14 ms |
6400 KB |
Output is correct |
| 31 |
Correct |
14 ms |
6400 KB |
Output is correct |
| 32 |
Correct |
17 ms |
6400 KB |
Output is correct |
| 33 |
Correct |
14 ms |
6400 KB |
Output is correct |
| 34 |
Correct |
14 ms |
6400 KB |
Output is correct |
| 35 |
Correct |
15 ms |
6272 KB |
Output is correct |
| 36 |
Correct |
15 ms |
6272 KB |
Output is correct |
| 37 |
Correct |
14 ms |
6272 KB |
Output is correct |
| 38 |
Correct |
14 ms |
6272 KB |
Output is correct |
| 39 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 40 |
Correct |
3 ms |
1408 KB |
Output is correct |
| 41 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 42 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 43 |
Correct |
5 ms |
1408 KB |
Output is correct |
| 44 |
Correct |
6 ms |
1408 KB |
Output is correct |
| 45 |
Correct |
7 ms |
1408 KB |
Output is correct |
| 46 |
Correct |
6 ms |
1408 KB |
Output is correct |
| 47 |
Correct |
6 ms |
1408 KB |
Output is correct |
| 48 |
Correct |
6 ms |
1408 KB |
Output is correct |
| 49 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 50 |
Correct |
3 ms |
1408 KB |
Output is correct |
| 51 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 52 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 53 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 54 |
Correct |
3 ms |
1280 KB |
Output is correct |
| 55 |
Correct |
3 ms |
1280 KB |
Output is correct |
| 56 |
Correct |
3 ms |
1280 KB |
Output is correct |
| 57 |
Correct |
3 ms |
1280 KB |
Output is correct |
| 58 |
Correct |
4 ms |
1280 KB |
Output is correct |
| 59 |
Correct |
318 ms |
7508 KB |
Output is correct |
| 60 |
Correct |
295 ms |
7288 KB |
Output is correct |
| 61 |
Correct |
270 ms |
7288 KB |
Output is correct |
| 62 |
Correct |
302 ms |
7416 KB |
Output is correct |
| 63 |
Correct |
298 ms |
7416 KB |
Output is correct |
| 64 |
Correct |
601 ms |
8344 KB |
Output is correct |
| 65 |
Correct |
609 ms |
8264 KB |
Output is correct |
| 66 |
Correct |
601 ms |
8440 KB |
Output is correct |
| 67 |
Correct |
609 ms |
8316 KB |
Output is correct |
| 68 |
Correct |
607 ms |
8312 KB |
Output is correct |
| 69 |
Correct |
246 ms |
7488 KB |
Output is correct |
| 70 |
Correct |
252 ms |
7488 KB |
Output is correct |
| 71 |
Correct |
245 ms |
7460 KB |
Output is correct |
| 72 |
Correct |
258 ms |
7544 KB |
Output is correct |
| 73 |
Correct |
272 ms |
7544 KB |
Output is correct |
| 74 |
Correct |
66 ms |
5496 KB |
Output is correct |
| 75 |
Correct |
60 ms |
5368 KB |
Output is correct |
| 76 |
Correct |
64 ms |
5308 KB |
Output is correct |
| 77 |
Correct |
66 ms |
5372 KB |
Output is correct |
| 78 |
Correct |
67 ms |
5364 KB |
Output is correct |
