| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 270583 |
2020-08-17T18:50:59 Z |
test2 |
Boat (APIO16_boat) |
C++14 |
|
654 ms |
10352 KB |
#include<bits/stdc++.h>
#define I inline void
using ll = long long ;
using ld = long double ;
using namespace std ;
const int N = 1e6 + 7 , mod = 1e9+7 ;
// how interesting!
int n , m;
vector<int> lst ;
int L[N] , R[N] , S[N] ;
int dp[1001][501] ;
ll faspow(ll x , ll y){
if(!y)return 1ll ;
ll ret = faspow(x , y/2) ;
ret = 1ll * ret *ret %mod ;
if(y&1)ret = 1ll * ret * x %mod ;
return ret ;
}
ll inv[N] ;
int main(){
ios_base::sync_with_stdio(0) ;
cin.tie(0) ;
//freopen("in.in" , "r" , stdin) ;
inv[1] = 1ll ;
for(int i = 2; i < N; i++) inv[i] = (mod/i) * (mod-inv[mod%i]) % mod;
cin >> n ;
for(int i = 1 ;i <= n;i++){
cin >> L[i] >> R[i] ;
R[i] ++ ;
lst.push_back(L[i]) ;
lst.push_back(R[i]) ;
}
sort(lst.begin() , lst.end()) ;
lst.resize(unique(lst.begin() , lst.end()) - lst.begin()) ;
for(int i = 1 ;i <= n ;i++){
L[i] = lower_bound(lst.begin() , lst.end() , L[i]) - lst.begin() + 1;
R[i] = lower_bound(lst.begin() , lst.end() , R[i]) - lst.begin() + 1;
}
int w = lst.size() ;
for(int i = 1 ;i < w ;i++){
S[i] = lst[i] - lst[i-1] ;
}
dp[0][0] = 1ll ;
for(int i = 1 ;i < w ;i++){
dp[i][0] = 1ll ;
for(int j = 1 ;j <=n ;j++){
int count = 1;
ll mul = S[i] ;
dp[i][j] = dp[i-1][j] ;
if(i < L[j] || i >= R[j])
continue ;
for(int k = j -1 ; k >= 0 ; k --){
dp[i][j] = (dp[i][j] + (mul * dp[i-1][k]) %mod ) %mod ;
if(L[k] <= i && R[k] > i){
mul = 1ll * mul * (S[i] + count) %mod ;
mul = 1ll * mul * inv[count +1] %mod ;
count ++ ;
}
}
}
}
ll ans = 0ll ;
for(int i = 1 ; i<=n ;i++){
ans = (ans + dp[w-1][i]) %mod ;
}
cout<< ans ;
return 0 ;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
29 ms |
10104 KB |
Output is correct |
| 2 |
Correct |
25 ms |
10112 KB |
Output is correct |
| 3 |
Correct |
30 ms |
10128 KB |
Output is correct |
| 4 |
Correct |
29 ms |
10112 KB |
Output is correct |
| 5 |
Correct |
31 ms |
10104 KB |
Output is correct |
| 6 |
Correct |
25 ms |
10112 KB |
Output is correct |
| 7 |
Correct |
25 ms |
10104 KB |
Output is correct |
| 8 |
Correct |
30 ms |
10112 KB |
Output is correct |
| 9 |
Correct |
27 ms |
10104 KB |
Output is correct |
| 10 |
Correct |
29 ms |
10112 KB |
Output is correct |
| 11 |
Correct |
28 ms |
10112 KB |
Output is correct |
| 12 |
Correct |
29 ms |
10104 KB |
Output is correct |
| 13 |
Correct |
26 ms |
10108 KB |
Output is correct |
| 14 |
Correct |
30 ms |
10104 KB |
Output is correct |
| 15 |
Correct |
34 ms |
10104 KB |
Output is correct |
| 16 |
Correct |
25 ms |
8576 KB |
Output is correct |
| 17 |
Correct |
25 ms |
8568 KB |
Output is correct |
| 18 |
Correct |
25 ms |
8576 KB |
Output is correct |
| 19 |
Correct |
26 ms |
8568 KB |
Output is correct |
| 20 |
Correct |
29 ms |
8568 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
29 ms |
10104 KB |
Output is correct |
| 2 |
Correct |
25 ms |
10112 KB |
Output is correct |
| 3 |
Correct |
30 ms |
10128 KB |
Output is correct |
| 4 |
Correct |
29 ms |
10112 KB |
Output is correct |
| 5 |
Correct |
31 ms |
10104 KB |
Output is correct |
| 6 |
Correct |
25 ms |
10112 KB |
Output is correct |
| 7 |
Correct |
25 ms |
10104 KB |
Output is correct |
| 8 |
Correct |
30 ms |
10112 KB |
Output is correct |
| 9 |
Correct |
27 ms |
10104 KB |
Output is correct |
| 10 |
Correct |
29 ms |
10112 KB |
Output is correct |
| 11 |
Correct |
28 ms |
10112 KB |
Output is correct |
| 12 |
Correct |
29 ms |
10104 KB |
Output is correct |
| 13 |
Correct |
26 ms |
10108 KB |
Output is correct |
| 14 |
Correct |
30 ms |
10104 KB |
Output is correct |
| 15 |
Correct |
34 ms |
10104 KB |
Output is correct |
| 16 |
Correct |
25 ms |
8576 KB |
Output is correct |
| 17 |
Correct |
25 ms |
8568 KB |
Output is correct |
| 18 |
Correct |
25 ms |
8576 KB |
Output is correct |
| 19 |
Correct |
26 ms |
8568 KB |
Output is correct |
| 20 |
Correct |
29 ms |
8568 KB |
Output is correct |
| 21 |
Correct |
332 ms |
9920 KB |
Output is correct |
| 22 |
Correct |
323 ms |
9976 KB |
Output is correct |
| 23 |
Correct |
308 ms |
9976 KB |
Output is correct |
| 24 |
Correct |
348 ms |
9972 KB |
Output is correct |
| 25 |
Correct |
341 ms |
9884 KB |
Output is correct |
| 26 |
Correct |
581 ms |
9960 KB |
Output is correct |
| 27 |
Correct |
589 ms |
10104 KB |
Output is correct |
| 28 |
Correct |
552 ms |
9848 KB |
Output is correct |
| 29 |
Correct |
552 ms |
10052 KB |
Output is correct |
| 30 |
Correct |
26 ms |
10104 KB |
Output is correct |
| 31 |
Correct |
28 ms |
10104 KB |
Output is correct |
| 32 |
Correct |
29 ms |
10232 KB |
Output is correct |
| 33 |
Correct |
27 ms |
10104 KB |
Output is correct |
| 34 |
Correct |
28 ms |
10112 KB |
Output is correct |
| 35 |
Correct |
27 ms |
10112 KB |
Output is correct |
| 36 |
Correct |
26 ms |
10104 KB |
Output is correct |
| 37 |
Correct |
26 ms |
10112 KB |
Output is correct |
| 38 |
Correct |
30 ms |
10112 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
24 ms |
8568 KB |
Output is correct |
| 2 |
Correct |
24 ms |
8576 KB |
Output is correct |
| 3 |
Correct |
24 ms |
8576 KB |
Output is correct |
| 4 |
Correct |
25 ms |
8576 KB |
Output is correct |
| 5 |
Correct |
25 ms |
8576 KB |
Output is correct |
| 6 |
Correct |
28 ms |
8576 KB |
Output is correct |
| 7 |
Correct |
26 ms |
8576 KB |
Output is correct |
| 8 |
Correct |
28 ms |
8576 KB |
Output is correct |
| 9 |
Correct |
27 ms |
8568 KB |
Output is correct |
| 10 |
Correct |
27 ms |
8568 KB |
Output is correct |
| 11 |
Correct |
24 ms |
8576 KB |
Output is correct |
| 12 |
Correct |
26 ms |
8576 KB |
Output is correct |
| 13 |
Correct |
24 ms |
8576 KB |
Output is correct |
| 14 |
Correct |
24 ms |
8576 KB |
Output is correct |
| 15 |
Correct |
25 ms |
8576 KB |
Output is correct |
| 16 |
Correct |
23 ms |
8448 KB |
Output is correct |
| 17 |
Correct |
25 ms |
8440 KB |
Output is correct |
| 18 |
Correct |
25 ms |
8448 KB |
Output is correct |
| 19 |
Correct |
24 ms |
8448 KB |
Output is correct |
| 20 |
Correct |
28 ms |
8440 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
29 ms |
10104 KB |
Output is correct |
| 2 |
Correct |
25 ms |
10112 KB |
Output is correct |
| 3 |
Correct |
30 ms |
10128 KB |
Output is correct |
| 4 |
Correct |
29 ms |
10112 KB |
Output is correct |
| 5 |
Correct |
31 ms |
10104 KB |
Output is correct |
| 6 |
Correct |
25 ms |
10112 KB |
Output is correct |
| 7 |
Correct |
25 ms |
10104 KB |
Output is correct |
| 8 |
Correct |
30 ms |
10112 KB |
Output is correct |
| 9 |
Correct |
27 ms |
10104 KB |
Output is correct |
| 10 |
Correct |
29 ms |
10112 KB |
Output is correct |
| 11 |
Correct |
28 ms |
10112 KB |
Output is correct |
| 12 |
Correct |
29 ms |
10104 KB |
Output is correct |
| 13 |
Correct |
26 ms |
10108 KB |
Output is correct |
| 14 |
Correct |
30 ms |
10104 KB |
Output is correct |
| 15 |
Correct |
34 ms |
10104 KB |
Output is correct |
| 16 |
Correct |
25 ms |
8576 KB |
Output is correct |
| 17 |
Correct |
25 ms |
8568 KB |
Output is correct |
| 18 |
Correct |
25 ms |
8576 KB |
Output is correct |
| 19 |
Correct |
26 ms |
8568 KB |
Output is correct |
| 20 |
Correct |
29 ms |
8568 KB |
Output is correct |
| 21 |
Correct |
332 ms |
9920 KB |
Output is correct |
| 22 |
Correct |
323 ms |
9976 KB |
Output is correct |
| 23 |
Correct |
308 ms |
9976 KB |
Output is correct |
| 24 |
Correct |
348 ms |
9972 KB |
Output is correct |
| 25 |
Correct |
341 ms |
9884 KB |
Output is correct |
| 26 |
Correct |
581 ms |
9960 KB |
Output is correct |
| 27 |
Correct |
589 ms |
10104 KB |
Output is correct |
| 28 |
Correct |
552 ms |
9848 KB |
Output is correct |
| 29 |
Correct |
552 ms |
10052 KB |
Output is correct |
| 30 |
Correct |
26 ms |
10104 KB |
Output is correct |
| 31 |
Correct |
28 ms |
10104 KB |
Output is correct |
| 32 |
Correct |
29 ms |
10232 KB |
Output is correct |
| 33 |
Correct |
27 ms |
10104 KB |
Output is correct |
| 34 |
Correct |
28 ms |
10112 KB |
Output is correct |
| 35 |
Correct |
27 ms |
10112 KB |
Output is correct |
| 36 |
Correct |
26 ms |
10104 KB |
Output is correct |
| 37 |
Correct |
26 ms |
10112 KB |
Output is correct |
| 38 |
Correct |
30 ms |
10112 KB |
Output is correct |
| 39 |
Correct |
24 ms |
8568 KB |
Output is correct |
| 40 |
Correct |
24 ms |
8576 KB |
Output is correct |
| 41 |
Correct |
24 ms |
8576 KB |
Output is correct |
| 42 |
Correct |
25 ms |
8576 KB |
Output is correct |
| 43 |
Correct |
25 ms |
8576 KB |
Output is correct |
| 44 |
Correct |
28 ms |
8576 KB |
Output is correct |
| 45 |
Correct |
26 ms |
8576 KB |
Output is correct |
| 46 |
Correct |
28 ms |
8576 KB |
Output is correct |
| 47 |
Correct |
27 ms |
8568 KB |
Output is correct |
| 48 |
Correct |
27 ms |
8568 KB |
Output is correct |
| 49 |
Correct |
24 ms |
8576 KB |
Output is correct |
| 50 |
Correct |
26 ms |
8576 KB |
Output is correct |
| 51 |
Correct |
24 ms |
8576 KB |
Output is correct |
| 52 |
Correct |
24 ms |
8576 KB |
Output is correct |
| 53 |
Correct |
25 ms |
8576 KB |
Output is correct |
| 54 |
Correct |
23 ms |
8448 KB |
Output is correct |
| 55 |
Correct |
25 ms |
8440 KB |
Output is correct |
| 56 |
Correct |
25 ms |
8448 KB |
Output is correct |
| 57 |
Correct |
24 ms |
8448 KB |
Output is correct |
| 58 |
Correct |
28 ms |
8440 KB |
Output is correct |
| 59 |
Correct |
348 ms |
10104 KB |
Output is correct |
| 60 |
Correct |
338 ms |
10104 KB |
Output is correct |
| 61 |
Correct |
319 ms |
10304 KB |
Output is correct |
| 62 |
Correct |
357 ms |
10232 KB |
Output is correct |
| 63 |
Correct |
342 ms |
10232 KB |
Output is correct |
| 64 |
Correct |
632 ms |
10104 KB |
Output is correct |
| 65 |
Correct |
630 ms |
10268 KB |
Output is correct |
| 66 |
Correct |
653 ms |
10352 KB |
Output is correct |
| 67 |
Correct |
654 ms |
10232 KB |
Output is correct |
| 68 |
Correct |
634 ms |
10104 KB |
Output is correct |
| 69 |
Correct |
295 ms |
10104 KB |
Output is correct |
| 70 |
Correct |
286 ms |
10108 KB |
Output is correct |
| 71 |
Correct |
286 ms |
10208 KB |
Output is correct |
| 72 |
Correct |
296 ms |
10104 KB |
Output is correct |
| 73 |
Correct |
302 ms |
10232 KB |
Output is correct |
| 74 |
Correct |
90 ms |
8568 KB |
Output is correct |
| 75 |
Correct |
84 ms |
8572 KB |
Output is correct |
| 76 |
Correct |
94 ms |
8696 KB |
Output is correct |
| 77 |
Correct |
87 ms |
8568 KB |
Output is correct |
| 78 |
Correct |
90 ms |
8696 KB |
Output is correct |
