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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#499820#9158. 分数zfs732100 ✓2802ms3708kbC++231.4kb2024-07-31 19:29:332024-07-31 19:29:33

Judging History

你现在查看的是最新测评结果

  • [2024-07-31 19:29:33]
  • 评测
  • 测评结果:100
  • 用时:2802ms
  • 内存:3708kb
  • [2024-07-31 19:29:33]
  • 提交

answer

/*
 * _|_|_|_|_|  _|_|_|_|    _|_|_|  _|_|_|_|_|  _|_|_|      _|_|
 *       _|    _|        _|                _|        _|  _|    _|
 *     _|      _|_|_|      _|_|          _|      _|_|        _|
 *   _|        _|              _|      _|            _|    _|
 * _|_|_|_|_|  _|        _|_|_|      _|        _|_|_|    _|_|_|_|
 */

#include <bits/stdc++.h>

int n, m;
long long ans;

// (ax + b) / (cx + d) -> (cx + d) / (ax + b) + 2x * (cx + d)
void DFS1(int a, int b, int c, int d, int l) {
  ans += std::max(0, (n - d) / c - l + 1);
  ans += std::max(0, std::min(a ? (n - b) / a : m, (m - d) / c) - l + 1);
  for (int x = 1;; x++) {
    int A = a + 2 * x * c, B = b + 2 * x * d;
    if (1LL * A * std::max(l, x) + B > m) break;
    DFS1(c, d, A, B, std::max(l, x));
  }
}

void DFS2(int a, int b, int l) {
  for (int x = 1;; x++) {
    int c = a + 2 * x * b;
    if (2LL * c * std::max(l, x) + b > m) break;
    DFS2(b, c, std::max(l, x));
  }
  DFS1(0, b, 2 * b, a, l + 1);
}

int main() {
#ifdef LOCAL
  freopen("task.in", "r", stdin);
  freopen("task.out", "w", stdout);
  freopen("task.err", "w", stderr);
#endif
  std::ios::sync_with_stdio(false);
  std::cin.tie(nullptr);

  std::cin >> n >> m;
  if (n > m) std::swap(n, m);
  DFS1(0, 1, 2, 0, 1);
  for (int i = 1; 4 * i * i < m; i++)
    DFS2(1, 2 * i, i);
  std::cout << ans << '\n';

  return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Pretests

Pretest #1:

score: 5
Accepted
time: 0ms
memory: 3556kb

input:

99 99

output:

406

result:

ok 1 number(s): "406"

Pretest #2:

score: 5
Accepted
time: 0ms
memory: 3624kb

input:

98 97

output:

405

result:

ok 1 number(s): "405"

Pretest #3:

score: 5
Accepted
time: 0ms
memory: 3708kb

input:

99 96

output:

396

result:

ok 1 number(s): "396"

Pretest #4:

score: 5
Accepted
time: 0ms
memory: 3544kb

input:

995 977

output:

11153

result:

ok 1 number(s): "11153"

Pretest #5:

score: 5
Accepted
time: 0ms
memory: 3700kb

input:

991 990

output:

11220

result:

ok 1 number(s): "11220"

Pretest #6:

score: 5
Accepted
time: 0ms
memory: 3572kb

input:

976 968

output:

10900

result:

ok 1 number(s): "10900"

Pretest #7:

score: 5
Accepted
time: 0ms
memory: 3576kb

input:

7602 7864

output:

215706

result:

ok 1 number(s): "215706"

Pretest #8:

score: 5
Accepted
time: 0ms
memory: 3512kb

input:

7959 7735

output:

220256

result:

ok 1 number(s): "220256"

Pretest #9:

score: 5
Accepted
time: 0ms
memory: 3640kb

input:

7878 7863

output:

221162

result:

ok 1 number(s): "221162"

Pretest #10:

score: 5
Accepted
time: 0ms
memory: 3644kb

input:

7788 7658

output:

215323

result:

ok 1 number(s): "215323"

Pretest #11:

score: 5
Accepted
time: 2ms
memory: 3708kb

input:

95399 99767

output:

8285295

result:

ok 1 number(s): "8285295"

Pretest #12:

score: 5
Accepted
time: 2ms
memory: 3552kb

input:

98051 99642

output:

8439713

result:

ok 1 number(s): "8439713"

Pretest #13:

score: 5
Accepted
time: 2ms
memory: 3612kb

input:

95624 96007

output:

8068127

result:

ok 1 number(s): "8068127"

Pretest #14:

score: 5
Accepted
time: 0ms
memory: 3556kb

input:

99208 98047

output:

8412610

result:

ok 1 number(s): "8412610"

Pretest #15:

score: 5
Accepted
time: 31ms
memory: 3636kb

input:

997417 967722

output:

229917323

result:

ok 1 number(s): "229917323"

Pretest #16:

score: 5
Accepted
time: 27ms
memory: 3604kb

input:

987807 956529

output:

226426912

result:

ok 1 number(s): "226426912"

Pretest #17:

score: 5
Accepted
time: 27ms
memory: 3644kb

input:

971654 984345

output:

228363805

result:

ok 1 number(s): "228363805"

Pretest #18:

score: 5
Accepted
time: 482ms
memory: 3596kb

input:

7892259 7983727

output:

4647501224

result:

ok 1 number(s): "4647501224"

Pretest #19:

score: 5
Accepted
time: 2802ms
memory: 3572kb

input:

7937869 29796968

output:

15197555613

result:

ok 1 number(s): "15197555613"

Pretest #20:

score: 5
Accepted
time: 2766ms
memory: 3576kb

input:

29717543 29510173

output:

30904211576

result:

ok 1 number(s): "30904211576"


Final Tests

Test #1:

score: 5
Accepted
time: 0ms
memory: 3636kb

input:

96 98

output:

396

result:

ok 1 number(s): "396"

Test #2:

score: 5
Accepted
time: 0ms
memory: 3628kb

input:

100 99

output:

408

result:

ok 1 number(s): "408"

Test #3:

score: 5
Accepted
time: 0ms
memory: 3688kb

input:

99 99

output:

406

result:

ok 1 number(s): "406"

Test #4:

score: 5
Accepted
time: 0ms
memory: 3616kb

input:

963 951

output:

10634

result:

ok 1 number(s): "10634"

Test #5:

score: 5
Accepted
time: 0ms
memory: 3576kb

input:

958 974

output:

10795

result:

ok 1 number(s): "10795"

Test #6:

score: 5
Accepted
time: 0ms
memory: 3624kb

input:

966 990

output:

11003

result:

ok 1 number(s): "11003"

Test #7:

score: 5
Accepted
time: 0ms
memory: 3632kb

input:

7958 7947

output:

224482

result:

ok 1 number(s): "224482"

Test #8:

score: 5
Accepted
time: 0ms
memory: 3640kb

input:

7623 7730

output:

213444

result:

ok 1 number(s): "213444"

Test #9:

score: 5
Accepted
time: 0ms
memory: 3612kb

input:

7845 7783

output:

218916

result:

ok 1 number(s): "218916"

Test #10:

score: 5
Accepted
time: 0ms
memory: 3556kb

input:

7881 7773

output:

219451

result:

ok 1 number(s): "219451"

Test #11:

score: 5
Accepted
time: 0ms
memory: 3628kb

input:

99414 98698

output:

8465217

result:

ok 1 number(s): "8465217"

Test #12:

score: 5
Accepted
time: 2ms
memory: 3680kb

input:

98249 96148

output:

8237486

result:

ok 1 number(s): "8237486"

Test #13:

score: 5
Accepted
time: 2ms
memory: 3560kb

input:

99003 96832

output:

8324931

result:

ok 1 number(s): "8324931"

Test #14:

score: 5
Accepted
time: 2ms
memory: 3632kb

input:

98266 96030

output:

8231065

result:

ok 1 number(s): "8231065"

Test #15:

score: 5
Accepted
time: 34ms
memory: 3556kb

input:

968207 958885

output:

223522215

result:

ok 1 number(s): "223522215"

Test #16:

score: 5
Accepted
time: 31ms
memory: 3684kb

input:

959846 998397

output:

228770873

result:

ok 1 number(s): "228770873"

Test #17:

score: 5
Accepted
time: 30ms
memory: 3628kb

input:

965821 972280

output:

225359210

result:

ok 1 number(s): "225359210"

Test #18:

score: 5
Accepted
time: 477ms
memory: 3576kb

input:

7855098 7962479

output:

4622947400

result:

ok 1 number(s): "4622947400"

Test #19:

score: 5
Accepted
time: 2773ms
memory: 3684kb

input:

7841076 29648718

output:

15040798710

result:

ok 1 number(s): "15040798710"

Test #20:

score: 5
Accepted
time: 2761ms
memory: 3696kb

input:

29365129 29012208

output:

30267839959

result:

ok 1 number(s): "30267839959"

Extra Test:

score: 0
Extra Test Passed