| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 725805 |
2023-04-18T05:54:29 Z |
quiet_space |
Boat (APIO16_boat) |
C++14 |
|
294 ms |
340 KB |
#include <bits/stdc++.h>
#define FOR(i,j,k) for(int i=j; i<=k; ++i)
#define ROF(i,j,k) for(int i=j; i>=k; --i)
inline int read (void) {
int x = 0, f = 1, ch = getchar();
while(!isdigit(ch)) { if(ch == '-') f = -f; ch = getchar(); }
while(isdigit(ch)) { x = x * 10 + ch - '0'; ch = getchar(); }
return x * f;
}
const int maxn = 505;
const int mod = 1000000007;
inline void inc (int&x, int y) { (x += y) >= mod ? x -= mod : x; }
int l[maxn], r[maxn], totb, b[maxn<<1], inv[maxn], c[maxn], g[maxn];
int main (void) {
int n = read();
inv[1] = 1;
FOR(i,2,n) inv[i] = 1ll * (mod - mod / i) * inv[mod % i] % mod;
FOR(i,1,n) b[++ totb] = l[i] = read(), b[++ totb] = r[i] = read() + 1;
std::sort(b+1, b+totb+1);
totb = std::unique(b+1, b+totb+1) - b - 1;
FOR(i,1,n) l[i] = std::lower_bound (b+1, b+totb+1, l[i]) - b, r[i] = std::lower_bound (b+1, b+totb+1, r[i]) - b;
c[0] = g[0] = 1;
FOR(j,1,totb-1) {
int len = b[j + 1] - b[j];
FOR(i,1,n) c[i] = 1ll * c[i-1] * (len + i - 1) % mod * inv[i] % mod;
ROF(i,n,1) if(l[i] <= j && j < r[i]) {
int f = 0, cnt = 1;
ROF(k,i-1,0) {
f = (f + 1ll * c[cnt] * g[k]) % mod;
if(l[k] <= j && j < r[k]) ++ cnt;
}
inc (g[i], f);
}
}
int ans = 0;
FOR(i,1,n) inc (ans, g[i]);
printf("%d\n", ans);
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
8 ms |
212 KB |
Output is correct |
| 2 |
Correct |
8 ms |
316 KB |
Output is correct |
| 3 |
Correct |
9 ms |
212 KB |
Output is correct |
| 4 |
Correct |
8 ms |
324 KB |
Output is correct |
| 5 |
Correct |
9 ms |
312 KB |
Output is correct |
| 6 |
Correct |
8 ms |
324 KB |
Output is correct |
| 7 |
Correct |
8 ms |
328 KB |
Output is correct |
| 8 |
Correct |
8 ms |
212 KB |
Output is correct |
| 9 |
Correct |
8 ms |
340 KB |
Output is correct |
| 10 |
Correct |
8 ms |
212 KB |
Output is correct |
| 11 |
Correct |
8 ms |
212 KB |
Output is correct |
| 12 |
Correct |
8 ms |
212 KB |
Output is correct |
| 13 |
Correct |
8 ms |
212 KB |
Output is correct |
| 14 |
Correct |
8 ms |
212 KB |
Output is correct |
| 15 |
Correct |
7 ms |
212 KB |
Output is correct |
| 16 |
Correct |
3 ms |
212 KB |
Output is correct |
| 17 |
Correct |
3 ms |
312 KB |
Output is correct |
| 18 |
Correct |
3 ms |
212 KB |
Output is correct |
| 19 |
Correct |
2 ms |
212 KB |
Output is correct |
| 20 |
Correct |
3 ms |
212 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
8 ms |
212 KB |
Output is correct |
| 2 |
Correct |
8 ms |
316 KB |
Output is correct |
| 3 |
Correct |
9 ms |
212 KB |
Output is correct |
| 4 |
Correct |
8 ms |
324 KB |
Output is correct |
| 5 |
Correct |
9 ms |
312 KB |
Output is correct |
| 6 |
Correct |
8 ms |
324 KB |
Output is correct |
| 7 |
Correct |
8 ms |
328 KB |
Output is correct |
| 8 |
Correct |
8 ms |
212 KB |
Output is correct |
| 9 |
Correct |
8 ms |
340 KB |
Output is correct |
| 10 |
Correct |
8 ms |
212 KB |
Output is correct |
| 11 |
Correct |
8 ms |
212 KB |
Output is correct |
| 12 |
Correct |
8 ms |
212 KB |
Output is correct |
| 13 |
Correct |
8 ms |
212 KB |
Output is correct |
| 14 |
Correct |
8 ms |
212 KB |
Output is correct |
| 15 |
Correct |
7 ms |
212 KB |
Output is correct |
| 16 |
Correct |
3 ms |
212 KB |
Output is correct |
| 17 |
Correct |
3 ms |
312 KB |
Output is correct |
| 18 |
Correct |
3 ms |
212 KB |
Output is correct |
| 19 |
Correct |
2 ms |
212 KB |
Output is correct |
| 20 |
Correct |
3 ms |
212 KB |
Output is correct |
| 21 |
Correct |
185 ms |
312 KB |
Output is correct |
| 22 |
Correct |
175 ms |
304 KB |
Output is correct |
| 23 |
Correct |
161 ms |
300 KB |
Output is correct |
| 24 |
Correct |
178 ms |
296 KB |
Output is correct |
| 25 |
Correct |
171 ms |
300 KB |
Output is correct |
| 26 |
Correct |
251 ms |
300 KB |
Output is correct |
| 27 |
Correct |
248 ms |
332 KB |
Output is correct |
| 28 |
Correct |
247 ms |
296 KB |
Output is correct |
| 29 |
Correct |
250 ms |
212 KB |
Output is correct |
| 30 |
Correct |
9 ms |
212 KB |
Output is correct |
| 31 |
Correct |
9 ms |
312 KB |
Output is correct |
| 32 |
Correct |
9 ms |
316 KB |
Output is correct |
| 33 |
Correct |
9 ms |
212 KB |
Output is correct |
| 34 |
Correct |
9 ms |
320 KB |
Output is correct |
| 35 |
Correct |
9 ms |
316 KB |
Output is correct |
| 36 |
Correct |
10 ms |
316 KB |
Output is correct |
| 37 |
Correct |
10 ms |
320 KB |
Output is correct |
| 38 |
Correct |
10 ms |
324 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
340 KB |
Output is correct |
| 2 |
Correct |
2 ms |
304 KB |
Output is correct |
| 3 |
Correct |
2 ms |
308 KB |
Output is correct |
| 4 |
Correct |
3 ms |
212 KB |
Output is correct |
| 5 |
Correct |
2 ms |
212 KB |
Output is correct |
| 6 |
Correct |
3 ms |
212 KB |
Output is correct |
| 7 |
Correct |
3 ms |
312 KB |
Output is correct |
| 8 |
Correct |
3 ms |
212 KB |
Output is correct |
| 9 |
Correct |
3 ms |
212 KB |
Output is correct |
| 10 |
Correct |
3 ms |
212 KB |
Output is correct |
| 11 |
Correct |
2 ms |
212 KB |
Output is correct |
| 12 |
Correct |
2 ms |
304 KB |
Output is correct |
| 13 |
Correct |
2 ms |
212 KB |
Output is correct |
| 14 |
Correct |
2 ms |
212 KB |
Output is correct |
| 15 |
Correct |
3 ms |
212 KB |
Output is correct |
| 16 |
Correct |
2 ms |
212 KB |
Output is correct |
| 17 |
Correct |
2 ms |
212 KB |
Output is correct |
| 18 |
Correct |
2 ms |
212 KB |
Output is correct |
| 19 |
Correct |
2 ms |
212 KB |
Output is correct |
| 20 |
Correct |
2 ms |
212 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
8 ms |
212 KB |
Output is correct |
| 2 |
Correct |
8 ms |
316 KB |
Output is correct |
| 3 |
Correct |
9 ms |
212 KB |
Output is correct |
| 4 |
Correct |
8 ms |
324 KB |
Output is correct |
| 5 |
Correct |
9 ms |
312 KB |
Output is correct |
| 6 |
Correct |
8 ms |
324 KB |
Output is correct |
| 7 |
Correct |
8 ms |
328 KB |
Output is correct |
| 8 |
Correct |
8 ms |
212 KB |
Output is correct |
| 9 |
Correct |
8 ms |
340 KB |
Output is correct |
| 10 |
Correct |
8 ms |
212 KB |
Output is correct |
| 11 |
Correct |
8 ms |
212 KB |
Output is correct |
| 12 |
Correct |
8 ms |
212 KB |
Output is correct |
| 13 |
Correct |
8 ms |
212 KB |
Output is correct |
| 14 |
Correct |
8 ms |
212 KB |
Output is correct |
| 15 |
Correct |
7 ms |
212 KB |
Output is correct |
| 16 |
Correct |
3 ms |
212 KB |
Output is correct |
| 17 |
Correct |
3 ms |
312 KB |
Output is correct |
| 18 |
Correct |
3 ms |
212 KB |
Output is correct |
| 19 |
Correct |
2 ms |
212 KB |
Output is correct |
| 20 |
Correct |
3 ms |
212 KB |
Output is correct |
| 21 |
Correct |
185 ms |
312 KB |
Output is correct |
| 22 |
Correct |
175 ms |
304 KB |
Output is correct |
| 23 |
Correct |
161 ms |
300 KB |
Output is correct |
| 24 |
Correct |
178 ms |
296 KB |
Output is correct |
| 25 |
Correct |
171 ms |
300 KB |
Output is correct |
| 26 |
Correct |
251 ms |
300 KB |
Output is correct |
| 27 |
Correct |
248 ms |
332 KB |
Output is correct |
| 28 |
Correct |
247 ms |
296 KB |
Output is correct |
| 29 |
Correct |
250 ms |
212 KB |
Output is correct |
| 30 |
Correct |
9 ms |
212 KB |
Output is correct |
| 31 |
Correct |
9 ms |
312 KB |
Output is correct |
| 32 |
Correct |
9 ms |
316 KB |
Output is correct |
| 33 |
Correct |
9 ms |
212 KB |
Output is correct |
| 34 |
Correct |
9 ms |
320 KB |
Output is correct |
| 35 |
Correct |
9 ms |
316 KB |
Output is correct |
| 36 |
Correct |
10 ms |
316 KB |
Output is correct |
| 37 |
Correct |
10 ms |
320 KB |
Output is correct |
| 38 |
Correct |
10 ms |
324 KB |
Output is correct |
| 39 |
Correct |
2 ms |
340 KB |
Output is correct |
| 40 |
Correct |
2 ms |
304 KB |
Output is correct |
| 41 |
Correct |
2 ms |
308 KB |
Output is correct |
| 42 |
Correct |
3 ms |
212 KB |
Output is correct |
| 43 |
Correct |
2 ms |
212 KB |
Output is correct |
| 44 |
Correct |
3 ms |
212 KB |
Output is correct |
| 45 |
Correct |
3 ms |
312 KB |
Output is correct |
| 46 |
Correct |
3 ms |
212 KB |
Output is correct |
| 47 |
Correct |
3 ms |
212 KB |
Output is correct |
| 48 |
Correct |
3 ms |
212 KB |
Output is correct |
| 49 |
Correct |
2 ms |
212 KB |
Output is correct |
| 50 |
Correct |
2 ms |
304 KB |
Output is correct |
| 51 |
Correct |
2 ms |
212 KB |
Output is correct |
| 52 |
Correct |
2 ms |
212 KB |
Output is correct |
| 53 |
Correct |
3 ms |
212 KB |
Output is correct |
| 54 |
Correct |
2 ms |
212 KB |
Output is correct |
| 55 |
Correct |
2 ms |
212 KB |
Output is correct |
| 56 |
Correct |
2 ms |
212 KB |
Output is correct |
| 57 |
Correct |
2 ms |
212 KB |
Output is correct |
| 58 |
Correct |
2 ms |
212 KB |
Output is correct |
| 59 |
Correct |
197 ms |
212 KB |
Output is correct |
| 60 |
Correct |
206 ms |
212 KB |
Output is correct |
| 61 |
Correct |
177 ms |
304 KB |
Output is correct |
| 62 |
Correct |
205 ms |
304 KB |
Output is correct |
| 63 |
Correct |
199 ms |
212 KB |
Output is correct |
| 64 |
Correct |
283 ms |
304 KB |
Output is correct |
| 65 |
Correct |
294 ms |
316 KB |
Output is correct |
| 66 |
Correct |
282 ms |
304 KB |
Output is correct |
| 67 |
Correct |
286 ms |
304 KB |
Output is correct |
| 68 |
Correct |
276 ms |
316 KB |
Output is correct |
| 69 |
Correct |
152 ms |
304 KB |
Output is correct |
| 70 |
Correct |
147 ms |
316 KB |
Output is correct |
| 71 |
Correct |
144 ms |
300 KB |
Output is correct |
| 72 |
Correct |
159 ms |
304 KB |
Output is correct |
| 73 |
Correct |
159 ms |
308 KB |
Output is correct |
| 74 |
Correct |
38 ms |
304 KB |
Output is correct |
| 75 |
Correct |
37 ms |
320 KB |
Output is correct |
| 76 |
Correct |
38 ms |
212 KB |
Output is correct |
| 77 |
Correct |
38 ms |
324 KB |
Output is correct |
| 78 |
Correct |
40 ms |
212 KB |
Output is correct |
