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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
#689912#6522. Digit ModewcyQwQWA 29ms4112kbC++142.3kb2024-10-30 19:11:052024-10-30 19:11:06

Judging History

你现在查看的是最新测评结果

  • [2024-10-30 19:11:06]
  • 评测
  • 测评结果:WA
  • 用时:29ms
  • 内存:4112kb
  • [2024-10-30 19:11:05]
  • 提交

answer

#include <bits/stdc++.h>

using namespace std;
using arr = array<int, 10>;

const int N = 55, mod = 1e9 + 7, M = 12;
int c[N][N], f[M][N][N], g[M][N][N], mx;
bool dbg;

int calc(int n, arr &b) {
  dbg = b[1] == 1;
  memset(f, 0, sizeof f);
  f[0][0][0] = 1;
  for (int i = 0; i < 9; i++) {
    for (int j = 0; j <= n; j++) {
      for (int k = 0; k <= mx; k++) {
        if (!f[i][j][k]) continue;
        for (int l = 0; l <= n - j; l++) {
          (f[i + 1][l + j][max(k, l + b[i])] += 1ll * f[i][j][k] * c[l + j][j] % mod) %= mod;
        }
      }
    } 
  }
  memset(g, 0, sizeof g);
  g[10][0][0] = 1;
  for (int i = 10; i >= 1; i--) {
    for (int j = 0; j <= n; j++) {
      for (int k = 0; k <= mx; k++) {
        if (!g[i][j][k]) continue;
        for (int l = 0; l <= n - j; l++) {
          (g[i - 1][l + j][max(k, l + b[i - 1])] += 1ll * g[i][j][k] * c[l + j][j] % mod) %= mod;
        }
      }
    }
  }
  for (int i = 0; i <= 10; i++) {
    for (int j = 0; j <= n; j++) {
      for (int k = 1; k <= mx; k++) {
        (f[i][j][k] += f[i][j][k - 1]) %= mod;
        (g[i][j][k] += g[i][j][k - 1]) %= mod;
      }
    }
  }
  int ans = 0;
  for (int i = 1; i < 10; i++) {
    for (int j = 0; j <= n; j++) {
      int sum = 0;
      for (int k = 0; k <= n - j; k++) {
        (sum += 1ll * f[i][k][j + b[i]] * g[i + 1][n - j - k][j - 1 + b[i]] * c[n - j][k] % mod) %= mod;
      }
      (ans += 1ll * i * sum % mod * c[n][j] % mod) %= mod;
    }
  }
  return ans;
}

void solve() {
  string s;
  cin >> s;
  int n = s.size();
  arr buc;
  buc.fill(0);
  int ans = 0;
  for (int i = 1; i < n; i++) {
    mx = i;
    for (int j = 1; j < 10; j++) {
      buc[j] = 1;
      (ans += calc(i - 1, buc)) %= mod;
      buc[j] = 0;
    }
  }
  mx = n;
  for (int i = 0; i < n; i++) {
    for (int j = !i ? 1 : 0; j < s[i] - '0'; j++) {
      buc[j]++;
      (ans += calc(n - i - 1, buc)) %= mod;
      buc[j]--;
    }
    buc[s[i] - '0']++;
  }
  (ans += calc(0, buc)) %= mod;
  cout << ans << '\n';
}

int main() {
  cin.tie(0)->sync_with_stdio(0);
  int T;
  cin >> T;
  for (int i = 0; i <= 50; i++) {
    for (int j = 0; j <= i; j++) {
      c[i][j] = !j ? 1 : (c[i - 1][j] + c[i - 1][j - 1]) % mod;
    }
  }
  while (T--) solve();
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3900kb

input:

5
9
99
999
99999
999999

output:

45
615
6570
597600
5689830

result:

ok 5 number(s): "45 615 6570 597600 5689830"

Test #2:

score: 0
Accepted
time: 2ms
memory: 3884kb

input:

34
7
48
8
76
1
97
7
5
7
7
2
89
9
4
84
46
6
73
86
78
5
3
8
9
31
24
78
7
11
45
2
65
88
6

output:

28
236
36
420
1
597
28
15
28
28
3
525
45
10
484
221
21
399
500
435
15
6
36
45
145
104
435
28
47
215
3
341
516
21

result:

ok 34 numbers

Test #3:

score: 0
Accepted
time: 3ms
memory: 3884kb

input:

16
935
888
429
370
499
881
285
162
178
948
205
858
573
249
773
615

output:

6009
5618
2456
2078
2905
5562
1603
887
993
6121
1174
5378
3333
1374
4724
3631

result:

ok 16 numbers

Test #4:

score: 0
Accepted
time: 3ms
memory: 3876kb

input:

12
1242
9985
6469
9310
4191
9497
3166
3495
9711
9698
4137
2257

output:

7292
63531
37910
58047
23987
59479
18076
19675
61184
61086
23672
12913

result:

ok 12 numbers

Test #5:

score: 0
Accepted
time: 4ms
memory: 3812kb

input:

10
61195
72739
10164
79164
57851
12326
29132
55992
67377
13873

output:

337575
408170
63792
450686
316513
70493
157773
305011
374163
77954

result:

ok 10 numbers

Test #6:

score: 0
Accepted
time: 4ms
memory: 3816kb

input:

8
529983
127270
421121
291729
461233
695056
365028
271160

output:

2744573
687141
2160067
1500426
2359204
3705475
1851172
1381981

result:

ok 8 numbers

Test #7:

score: 0
Accepted
time: 4ms
memory: 3836kb

input:

7
7934351
8474057
1287369
5845624
7796773
5805755
7349121

output:

42465725
45668947
6716401
30094426
41554096
29861098
38756757

result:

ok 7 numbers

Test #8:

score: 0
Accepted
time: 12ms
memory: 3820kb

input:

3
5014252832385738
8762796162648653
919997886706385

output:

892033338
297722019
462512414

result:

ok 3 number(s): "892033338 297722019 462512414"

Test #9:

score: -100
Wrong Answer
time: 29ms
memory: 4112kb

input:

2
775701797726112292362823101
75927988177061355614

output:

956916846
566830847

result:

wrong answer 1st numbers differ - expected: '371275551', found: '956916846'