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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#232887 | #6410. Classical DP Problem | ana_valeria | WA | 195ms | 101324kb | C++14 | 1.4kb | 2023-10-31 00:13:48 | 2023-10-31 00:13:49 |
Judging History
answer
#include <iostream>
#include <algorithm>
#define MAX 5000
#define MOD 998244353
using namespace std;
///ifstream cin ("c.in");
///ofstream cout ("c.out");
int a[MAX + 10], aux[MAX + 10], dp[MAX + 10][MAX + 10], n;
int findK()
{
int k = 0;
for (int i = 1; i <= n + 1 && k == 0; i++)
if (a[i] < i)
k = i - 1;
return k;
}
int findX(int k)
{
return a[k + 1];
}
int kFact(int k)
{
int p = 1;
for (int i = 1; i <= k; i++)
p = 1LL * p * i % MOD;
return p;
}
int DP(int k)
{
int x = findX(k);
for (int i = 0; i <= k; i++)
for (int j = 0; j <= x; j++)
dp[i][j] = 0;
dp[0][x] = 1;
for (int i = 0; i < k; i++)
for (int j = x; j >= 0; j--)
{
dp[i + 1][j] = (dp[i + 1][j] + 1LL * (a[i + 1] - j) * dp[i][j] % MOD) % MOD;
if (j > 0)
dp[i + 1][j - 1] = (dp[i + 1][j - 1] + 1LL * j * dp[i][j] % MOD) % MOD;
}
return dp[k][0];
}
void flip()
{
for (int i = 1; i <= n; i++)
for (int j = 1; j <= a[i]; j++)
aux[j]++;
for (int i = 1; i <= a[1]; i++)
a[i] = aux[i];
}
int main()
{
cin >> n;
for (int i = 1; i <= n; i++)
cin >> a[i];
reverse(a + 1, a + n + 1);
int k = findK();
cout << k << ' ';
int ans = DP(k);
flip();
ans = (ans + DP(k) - kFact(k) + MOD) % MOD;
cout << ans;
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 0ms
memory: 3576kb
input:
3 1 2 3
output:
2 6
result:
ok 2 number(s): "2 6"
Test #2:
score: 0
Accepted
time: 1ms
memory: 5408kb
input:
1 1
output:
1 1
result:
ok 2 number(s): "1 1"
Test #3:
score: 0
Accepted
time: 0ms
memory: 3516kb
input:
2 1 1
output:
1 2
result:
ok 2 number(s): "1 2"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3380kb
input:
2 2 2
output:
2 6
result:
ok 2 number(s): "2 6"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3520kb
input:
3 1 1 1
output:
1 3
result:
ok 2 number(s): "1 3"
Test #6:
score: 0
Accepted
time: 1ms
memory: 5448kb
input:
3 2 2 2
output:
2 9
result:
ok 2 number(s): "2 9"
Test #7:
score: 0
Accepted
time: 0ms
memory: 3404kb
input:
3 3 3 3
output:
3 48
result:
ok 2 number(s): "3 48"
Test #8:
score: 0
Accepted
time: 0ms
memory: 3368kb
input:
5 1 1 3 3 4
output:
3 47
result:
ok 2 number(s): "3 47"
Test #9:
score: 0
Accepted
time: 1ms
memory: 3416kb
input:
10 2 4 5 5 5 5 6 8 8 10
output:
5 864
result:
ok 2 number(s): "5 864"
Test #10:
score: 0
Accepted
time: 0ms
memory: 3344kb
input:
30 6 8 9 9 9 10 13 14 15 15 16 17 17 18 20 22 22 23 23 24 24 25 25 25 27 28 28 29 29 30
output:
17 986189864
result:
ok 2 number(s): "17 986189864"
Test #11:
score: 0
Accepted
time: 0ms
memory: 3564kb
input:
123 1 1 1 2 2 3 3 6 6 7 7 7 8 8 9 9 10 10 10 11 12 12 12 13 14 14 14 14 16 17 17 17 17 17 18 19 20 20 21 21 22 22 22 23 23 23 25 25 26 27 27 28 28 28 28 29 29 30 31 31 31 32 33 33 33 34 35 35 35 36 37 37 38 39 39 39 39 40 41 41 42 42 42 43 44 48 48 50 52 53 55 56 57 57 57 58 65 68 71 74 75 76 76 82 ...
output:
42 287179924
result:
ok 2 number(s): "42 287179924"
Test #12:
score: 0
Accepted
time: 2ms
memory: 7928kb
input:
1234 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 4 5 5 5 5 6 6 7 7 7 7 7 7 7 8 8 8 8 9 9 10 10 10 11 11 11 11 11 12 13 13 14 14 15 15 15 15 16 16 16 17 17 17 18 18 18 19 19 19 19 19 19 19 19 19 19 20 20 20 21 21 21 21 21 22 22 22 23 23 23 23 23 23 23 23 23 24 24 24 24 24 24 24 24 24 24 25 25 25 25 25 26 26 26 26 ...
output:
239 98119841
result:
ok 2 number(s): "239 98119841"
Test #13:
score: 0
Accepted
time: 10ms
memory: 28192kb
input:
2345 1 1 2 2 2 7 7 9 9 9 9 15 17 19 19 22 23 24 25 29 29 29 30 31 32 33 35 37 39 41 42 42 43 43 44 46 46 46 47 48 48 50 51 51 52 53 53 54 55 56 57 58 58 60 61 63 63 64 65 65 65 66 67 67 67 69 69 69 70 71 72 72 73 73 74 75 75 77 77 79 83 85 86 88 90 90 91 93 94 97 99 104 106 107 108 108 109 109 110 1...
output:
1239 588926916
result:
ok 2 number(s): "1239 588926916"
Test #14:
score: 0
Accepted
time: 41ms
memory: 48540kb
input:
3456 4 7 8 8 9 19 20 21 22 23 23 27 29 29 32 32 33 43 45 50 52 52 55 58 58 58 60 62 66 67 68 69 71 74 74 76 77 79 82 82 87 87 88 91 93 95 96 97 99 102 104 106 107 108 121 121 123 126 127 131 137 138 139 142 145 147 152 156 157 159 161 165 166 170 170 172 174 175 178 182 183 185 186 189 190 195 195 1...
output:
2239 24387925
result:
ok 2 number(s): "2239 24387925"
Test #15:
score: 0
Accepted
time: 82ms
memory: 67448kb
input:
4456 4 7 10 10 22 24 29 33 33 34 35 37 40 41 47 48 55 61 61 65 69 71 76 91 95 99 105 105 105 110 112 113 117 117 120 121 122 123 125 127 130 134 135 138 140 141 142 142 144 150 153 154 157 162 165 169 170 170 174 175 176 178 197 198 198 201 208 211 211 212 214 214 215 217 220 224 224 225 230 231 232...
output:
3239 904395650
result:
ok 2 number(s): "3239 904395650"
Test #16:
score: 0
Accepted
time: 146ms
memory: 88040kb
input:
5000 1 5 7 8 24 28 36 47 50 56 59 64 66 85 89 94 95 95 98 108 110 117 122 155 157 158 163 172 172 179 186 197 198 220 236 251 254 254 256 265 287 288 298 302 306 312 327 336 343 344 345 348 350 360 363 364 382 382 390 399 402 406 412 421 425 435 442 445 450 451 453 478 481 490 491 496 499 500 500 50...
output:
4239 328488156
result:
ok 2 number(s): "4239 328488156"
Test #17:
score: 0
Accepted
time: 3ms
memory: 99884kb
input:
5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 ...
output:
5000 317554850
result:
ok 2 number(s): "5000 317554850"
Test #18:
score: 0
Accepted
time: 138ms
memory: 101324kb
input:
5000 4123 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 4999 ...
output:
4999 609985488
result:
ok 2 number(s): "4999 609985488"
Test #19:
score: 0
Accepted
time: 183ms
memory: 101180kb
input:
5000 1501 1689 3190 3774 4708 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 4995 ...
output:
4995 577669110
result:
ok 2 number(s): "4995 577669110"
Test #20:
score: 0
Accepted
time: 195ms
memory: 99468kb
input:
5000 63 107 213 432 444 500 519 543 591 699 704 825 930 1027 1141 1256 1287 1347 1487 1547 1649 1651 1674 1696 1701 1716 1738 1849 1880 1919 1965 1973 1989 2000 2052 2063 2094 2112 2155 2288 2459 2527 2600 2607 2663 2703 2779 2968 3002 3041 3050 3092 3097 3098 3352 3378 3440 3525 3613 3626 3712 3742...
output:
4913 376487851
result:
ok 2 number(s): "4913 376487851"
Test #21:
score: 0
Accepted
time: 170ms
memory: 93420kb
input:
5000 2 9 17 19 50 63 63 82 83 87 92 101 126 136 172 182 187 201 208 214 222 233 242 256 271 272 284 288 294 300 303 323 353 354 418 430 463 500 501 511 543 550 554 568 569 570 570 577 578 590 654 671 680 695 702 705 716 722 732 736 776 783 785 794 797 808 835 855 859 866 891 896 924 934 942 953 961 ...
output:
4567 930123987
result:
ok 2 number(s): "4567 930123987"
Test #22:
score: -100
Wrong Answer
time: 144ms
memory: 84236kb
input:
5000 9 16 18 19 21 27 44 49 53 63 66 70 84 95 95 101 103 107 107 110 113 113 114 118 126 131 132 135 141 155 162 162 162 168 181 183 184 184 190 191 191 194 195 196 201 203 210 210 211 214 215 219 221 222 232 241 243 250 250 252 253 256 258 258 258 263 271 272 274 282 283 287 292 293 296 308 315 317...
output:
4097 -35109866
result:
wrong answer 2nd numbers differ - expected: '266880018', found: '-35109866'