| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 47504 |
2018-05-03T23:10:34 Z |
jun6873 |
Boat (APIO16_boat) |
C++11 |
|
1548 ms |
5616 KB |
#include <bits/stdc++.h>
using namespace std;
int n, a[504], b[504], cn, mi[504], c[1004], num[1004], m[1004][504], s0[1004], s[1004][504];
const int mod = 1000000007;
int sum(int x, int y) { return (x+y) % mod; }
int mul(int x, int y) { return (x*(long long)y) % mod; }
int power(int x, int k) {
if (!k) return 1;
if (k&1) return mul(x, power(x, k-1));
int r = power(x, k/2); return mul(r, r);
}
int main() {
cin >> n;
for (int i=0; i<n; i++) cin >> a[i] >> b[i];
for (int i=0; i<n; i++) c[2*i] = a[i], c[2*i+1] = b[i]+1;
sort(c, c+2*n+1);
cn = unique(c, c+2*n+1) - c;
for (int i=0; i<n; i++) {
a[i] = lower_bound(c, c+cn, a[i]) - c;
b[i] = lower_bound(c, c+cn, b[i]+1) - c;
}
for (int i=1; i<504; i++) mi[i] = power(i, mod-2);
s0[0] = 1;
s[0][1] = 1; num[0] = 1;
int ans = 0;
for (int i=0; i<n; i++) {
memset(m, 0, sizeof(m));
for (int j=a[i]; j<b[i]; j++) num[j]++;
for (int j=a[i]; j<b[i]; j++) for (int jb=0; jb<j; jb++) m[j][1] = sum(m[j][1], mul(c[j+1]-c[j], s0[jb]));
for (int j=a[i]; j<b[i]; j++) for (int k=2; k<=num[j]; k++) m[j][k] = mul(mul(max(0, c[j+1]-c[j]-k+1), mi[k]), s[j][k-1]);
for (int j=a[i]; j<b[i]; j++) for (int k=1; k<=num[j]; k++) ans = sum(ans, m[j][k]);
for (int j=0; j<cn; j++) for (int k=1; k<=num[j]; k++) s0[j] = sum(s0[j], m[j][k]);
for (int j=0; j<cn; j++) for (int k=1; k<=num[j]; k++) s[j][k] = sum(s[j][k], m[j][k]);
}
cout << ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
65 ms |
4344 KB |
Output is correct |
| 2 |
Correct |
60 ms |
4400 KB |
Output is correct |
| 3 |
Correct |
60 ms |
4416 KB |
Output is correct |
| 4 |
Correct |
62 ms |
4488 KB |
Output is correct |
| 5 |
Correct |
59 ms |
4548 KB |
Output is correct |
| 6 |
Correct |
59 ms |
4560 KB |
Output is correct |
| 7 |
Correct |
62 ms |
4680 KB |
Output is correct |
| 8 |
Correct |
64 ms |
4820 KB |
Output is correct |
| 9 |
Correct |
62 ms |
4820 KB |
Output is correct |
| 10 |
Correct |
64 ms |
4840 KB |
Output is correct |
| 11 |
Correct |
61 ms |
4840 KB |
Output is correct |
| 12 |
Correct |
59 ms |
4840 KB |
Output is correct |
| 13 |
Correct |
59 ms |
4840 KB |
Output is correct |
| 14 |
Correct |
63 ms |
4840 KB |
Output is correct |
| 15 |
Correct |
59 ms |
4844 KB |
Output is correct |
| 16 |
Correct |
54 ms |
4844 KB |
Output is correct |
| 17 |
Correct |
55 ms |
4844 KB |
Output is correct |
| 18 |
Correct |
55 ms |
4844 KB |
Output is correct |
| 19 |
Correct |
56 ms |
4844 KB |
Output is correct |
| 20 |
Correct |
55 ms |
4844 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
65 ms |
4344 KB |
Output is correct |
| 2 |
Correct |
60 ms |
4400 KB |
Output is correct |
| 3 |
Correct |
60 ms |
4416 KB |
Output is correct |
| 4 |
Correct |
62 ms |
4488 KB |
Output is correct |
| 5 |
Correct |
59 ms |
4548 KB |
Output is correct |
| 6 |
Correct |
59 ms |
4560 KB |
Output is correct |
| 7 |
Correct |
62 ms |
4680 KB |
Output is correct |
| 8 |
Correct |
64 ms |
4820 KB |
Output is correct |
| 9 |
Correct |
62 ms |
4820 KB |
Output is correct |
| 10 |
Correct |
64 ms |
4840 KB |
Output is correct |
| 11 |
Correct |
61 ms |
4840 KB |
Output is correct |
| 12 |
Correct |
59 ms |
4840 KB |
Output is correct |
| 13 |
Correct |
59 ms |
4840 KB |
Output is correct |
| 14 |
Correct |
63 ms |
4840 KB |
Output is correct |
| 15 |
Correct |
59 ms |
4844 KB |
Output is correct |
| 16 |
Correct |
54 ms |
4844 KB |
Output is correct |
| 17 |
Correct |
55 ms |
4844 KB |
Output is correct |
| 18 |
Correct |
55 ms |
4844 KB |
Output is correct |
| 19 |
Correct |
56 ms |
4844 KB |
Output is correct |
| 20 |
Correct |
55 ms |
4844 KB |
Output is correct |
| 21 |
Correct |
843 ms |
4844 KB |
Output is correct |
| 22 |
Correct |
837 ms |
4860 KB |
Output is correct |
| 23 |
Correct |
778 ms |
4884 KB |
Output is correct |
| 24 |
Correct |
817 ms |
5020 KB |
Output is correct |
| 25 |
Correct |
854 ms |
5020 KB |
Output is correct |
| 26 |
Correct |
1257 ms |
5020 KB |
Output is correct |
| 27 |
Correct |
1323 ms |
5044 KB |
Output is correct |
| 28 |
Correct |
1299 ms |
5044 KB |
Output is correct |
| 29 |
Correct |
1299 ms |
5044 KB |
Output is correct |
| 30 |
Correct |
66 ms |
5068 KB |
Output is correct |
| 31 |
Correct |
62 ms |
5080 KB |
Output is correct |
| 32 |
Correct |
66 ms |
5080 KB |
Output is correct |
| 33 |
Correct |
66 ms |
5104 KB |
Output is correct |
| 34 |
Correct |
66 ms |
5108 KB |
Output is correct |
| 35 |
Correct |
66 ms |
5124 KB |
Output is correct |
| 36 |
Correct |
62 ms |
5140 KB |
Output is correct |
| 37 |
Correct |
64 ms |
5268 KB |
Output is correct |
| 38 |
Correct |
62 ms |
5268 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
21 ms |
5268 KB |
Output is correct |
| 2 |
Correct |
19 ms |
5268 KB |
Output is correct |
| 3 |
Correct |
20 ms |
5268 KB |
Output is correct |
| 4 |
Correct |
20 ms |
5268 KB |
Output is correct |
| 5 |
Correct |
21 ms |
5268 KB |
Output is correct |
| 6 |
Correct |
26 ms |
5268 KB |
Output is correct |
| 7 |
Correct |
25 ms |
5268 KB |
Output is correct |
| 8 |
Correct |
25 ms |
5268 KB |
Output is correct |
| 9 |
Correct |
25 ms |
5268 KB |
Output is correct |
| 10 |
Correct |
25 ms |
5268 KB |
Output is correct |
| 11 |
Correct |
21 ms |
5268 KB |
Output is correct |
| 12 |
Correct |
20 ms |
5268 KB |
Output is correct |
| 13 |
Correct |
22 ms |
5268 KB |
Output is correct |
| 14 |
Correct |
21 ms |
5268 KB |
Output is correct |
| 15 |
Correct |
23 ms |
5268 KB |
Output is correct |
| 16 |
Correct |
18 ms |
5268 KB |
Output is correct |
| 17 |
Correct |
17 ms |
5268 KB |
Output is correct |
| 18 |
Correct |
17 ms |
5268 KB |
Output is correct |
| 19 |
Correct |
17 ms |
5268 KB |
Output is correct |
| 20 |
Correct |
17 ms |
5268 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
65 ms |
4344 KB |
Output is correct |
| 2 |
Correct |
60 ms |
4400 KB |
Output is correct |
| 3 |
Correct |
60 ms |
4416 KB |
Output is correct |
| 4 |
Correct |
62 ms |
4488 KB |
Output is correct |
| 5 |
Correct |
59 ms |
4548 KB |
Output is correct |
| 6 |
Correct |
59 ms |
4560 KB |
Output is correct |
| 7 |
Correct |
62 ms |
4680 KB |
Output is correct |
| 8 |
Correct |
64 ms |
4820 KB |
Output is correct |
| 9 |
Correct |
62 ms |
4820 KB |
Output is correct |
| 10 |
Correct |
64 ms |
4840 KB |
Output is correct |
| 11 |
Correct |
61 ms |
4840 KB |
Output is correct |
| 12 |
Correct |
59 ms |
4840 KB |
Output is correct |
| 13 |
Correct |
59 ms |
4840 KB |
Output is correct |
| 14 |
Correct |
63 ms |
4840 KB |
Output is correct |
| 15 |
Correct |
59 ms |
4844 KB |
Output is correct |
| 16 |
Correct |
54 ms |
4844 KB |
Output is correct |
| 17 |
Correct |
55 ms |
4844 KB |
Output is correct |
| 18 |
Correct |
55 ms |
4844 KB |
Output is correct |
| 19 |
Correct |
56 ms |
4844 KB |
Output is correct |
| 20 |
Correct |
55 ms |
4844 KB |
Output is correct |
| 21 |
Correct |
843 ms |
4844 KB |
Output is correct |
| 22 |
Correct |
837 ms |
4860 KB |
Output is correct |
| 23 |
Correct |
778 ms |
4884 KB |
Output is correct |
| 24 |
Correct |
817 ms |
5020 KB |
Output is correct |
| 25 |
Correct |
854 ms |
5020 KB |
Output is correct |
| 26 |
Correct |
1257 ms |
5020 KB |
Output is correct |
| 27 |
Correct |
1323 ms |
5044 KB |
Output is correct |
| 28 |
Correct |
1299 ms |
5044 KB |
Output is correct |
| 29 |
Correct |
1299 ms |
5044 KB |
Output is correct |
| 30 |
Correct |
66 ms |
5068 KB |
Output is correct |
| 31 |
Correct |
62 ms |
5080 KB |
Output is correct |
| 32 |
Correct |
66 ms |
5080 KB |
Output is correct |
| 33 |
Correct |
66 ms |
5104 KB |
Output is correct |
| 34 |
Correct |
66 ms |
5108 KB |
Output is correct |
| 35 |
Correct |
66 ms |
5124 KB |
Output is correct |
| 36 |
Correct |
62 ms |
5140 KB |
Output is correct |
| 37 |
Correct |
64 ms |
5268 KB |
Output is correct |
| 38 |
Correct |
62 ms |
5268 KB |
Output is correct |
| 39 |
Correct |
21 ms |
5268 KB |
Output is correct |
| 40 |
Correct |
19 ms |
5268 KB |
Output is correct |
| 41 |
Correct |
20 ms |
5268 KB |
Output is correct |
| 42 |
Correct |
20 ms |
5268 KB |
Output is correct |
| 43 |
Correct |
21 ms |
5268 KB |
Output is correct |
| 44 |
Correct |
26 ms |
5268 KB |
Output is correct |
| 45 |
Correct |
25 ms |
5268 KB |
Output is correct |
| 46 |
Correct |
25 ms |
5268 KB |
Output is correct |
| 47 |
Correct |
25 ms |
5268 KB |
Output is correct |
| 48 |
Correct |
25 ms |
5268 KB |
Output is correct |
| 49 |
Correct |
21 ms |
5268 KB |
Output is correct |
| 50 |
Correct |
20 ms |
5268 KB |
Output is correct |
| 51 |
Correct |
22 ms |
5268 KB |
Output is correct |
| 52 |
Correct |
21 ms |
5268 KB |
Output is correct |
| 53 |
Correct |
23 ms |
5268 KB |
Output is correct |
| 54 |
Correct |
18 ms |
5268 KB |
Output is correct |
| 55 |
Correct |
17 ms |
5268 KB |
Output is correct |
| 56 |
Correct |
17 ms |
5268 KB |
Output is correct |
| 57 |
Correct |
17 ms |
5268 KB |
Output is correct |
| 58 |
Correct |
17 ms |
5268 KB |
Output is correct |
| 59 |
Correct |
965 ms |
5416 KB |
Output is correct |
| 60 |
Correct |
911 ms |
5420 KB |
Output is correct |
| 61 |
Correct |
892 ms |
5420 KB |
Output is correct |
| 62 |
Correct |
991 ms |
5420 KB |
Output is correct |
| 63 |
Correct |
946 ms |
5420 KB |
Output is correct |
| 64 |
Correct |
1518 ms |
5420 KB |
Output is correct |
| 65 |
Correct |
1548 ms |
5616 KB |
Output is correct |
| 66 |
Correct |
1517 ms |
5616 KB |
Output is correct |
| 67 |
Correct |
1531 ms |
5616 KB |
Output is correct |
| 68 |
Correct |
1521 ms |
5616 KB |
Output is correct |
| 69 |
Correct |
930 ms |
5616 KB |
Output is correct |
| 70 |
Correct |
949 ms |
5616 KB |
Output is correct |
| 71 |
Correct |
951 ms |
5616 KB |
Output is correct |
| 72 |
Correct |
986 ms |
5616 KB |
Output is correct |
| 73 |
Correct |
970 ms |
5616 KB |
Output is correct |
| 74 |
Correct |
156 ms |
5616 KB |
Output is correct |
| 75 |
Correct |
171 ms |
5616 KB |
Output is correct |
| 76 |
Correct |
158 ms |
5616 KB |
Output is correct |
| 77 |
Correct |
159 ms |
5616 KB |
Output is correct |
| 78 |
Correct |
157 ms |
5616 KB |
Output is correct |
