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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
#670920	#2629. Let's Win the Election	liuziao^#	23	548ms	7836kb	C++23	1.5kb	2024-10-24 08:47:35	2024-10-24 08:47:35

Judging History

你现在查看的是最新测评结果

[2024-10-24 08:47:35]
评测

测评结果：23
用时：548ms
内存：7836kb

查看

[2024-10-24 08:47:35]
提交

answer

#include <bits/stdc++.h>

// #define int int64_t

using f64 = long double;
using pii = std::pair<int, int>;

const int kMaxN = 505;

int n, k;
pii a[kMaxN];
f64 f[kMaxN][kMaxN];

void dickdreamer() {
  std::cin >> n >> k;
  int can = 0;
  for (int i = 1; i <= n; ++i) {
    std::cin >> a[i].first >> a[i].second;
    if (a[i].second != -1) ++can;
  }
  std::sort(a + 1, a + 1 + n, [&] (pii p1, pii p2) { return p1.second < p2.second; });
  f64 ans = 1e9;
  for (int cnt = std::max(k / 2 - 10, 0); cnt <= std::min({can, k, k / 2 + 10}); ++cnt) {
    for (int i = 0; i <= n; ++i)
      for (int j = 0; j <= n; ++j)
        f[i][j] = 1e9;
    f[0][0] = 0;
    for (int i = 1; i <= n; ++i) {
      for (int j = cnt; ~j; --j) {
        for (int k = ::k - cnt; ~k; --k) {
          if (j && a[i].second != -1) f[j][k] = std::min(f[j][k], f[j - 1][k] + (f64)a[i].second / j);
          if (k) f[j][k] = std::min(f[j][k], f[j][k - 1] + (f64)a[i].first / (cnt + 1));
        }
      }
    }
    ans = std::min(ans, f[cnt][k - cnt]);
    // if ((int)ans == 644) {
    //   std::cerr << cnt << '\n';
    // }
  }
  std::cout << std::fixed << std::setprecision(10) << ans << '\n';
}

int32_t main() {
#ifdef ORZXKR
  freopen("in.txt", "r", stdin);
  freopen("out.txt", "w", stdout);
#endif
  std::ios::sync_with_stdio(0), std::cin.tie(0), std::cout.tie(0);
  int T = 1;
  // std::cin >> T;
  while (T--) dickdreamer();
  // std::cerr << 1.0 * clock() / CLOCKS_PER_SEC << "s\n";
  return 0;
}

源文件, 语言: C++23

詳細信息

Subtask #1:

score: 0

Wrong Answer

Test #1:

score: 5

Accepted

time: 1ms

memory: 3920kb

input:

1
1
729 -1

output:

729.0000000000

result:

ok error = 0.000000000

Test #2:

score: 5

Accepted

time: 0ms

memory: 3812kb

input:

output:

300.0000000000

result:

ok error = 0.000000000

Test #3:

score: 5

Accepted

time: 0ms

memory: 3900kb

input:

output:

1140.0000000000

result:

ok error = 0.000000000

Test #4:

score: 5

Accepted

time: 0ms

memory: 3784kb

input:

output:

1059.0000000000

result:

ok error = 0.000000000

Test #5:

score: 0

Wrong Answer

time: 0ms

memory: 3780kb

input:

output:

1000000000.0000000000

result:

wrong answer read 1000000000.000000000 but expected 2580.000000000, error = 999997420.000000000

Subtask #2:

score: 0

Wrong Answer

Test #11:

score: 5

Accepted

time: 0ms

memory: 3876kb

input:

1
1
791 791

output:

791.0000000000

result:

ok error = 0.000000000

Test #12:

score: 0

Wrong Answer

time: 548ms

memory: 7768kb

input:

output:

392.9002596989

result:

wrong answer read 392.900259699 but expected 341.079314579, error = 51.820945120

Subtask #3:

score: 11

Accepted

Test #21:

score: 11

Accepted

time: 0ms

memory: 3836kb

input:

output:

51.0000000000

result:

ok error = 0.000000000

Test #22:

score: 11

Accepted

time: 0ms

memory: 3916kb

input:

output:

68.0000000000

result:

ok error = 0.000000000

Test #23:

score: 11

Accepted

time: 0ms

memory: 3836kb

input:

output:

301.5000000000

result:

ok error = 0.000000000

Test #24:

score: 11

Accepted

time: 0ms

memory: 3788kb

input:

output:

589.5000000000

result:

ok error = 0.000000000

Test #25:

score: 11

Accepted

time: 0ms

memory: 3844kb

input:

output:

517.0000000000

result:

ok error = 0.000000000

Test #26:

score: 11

Accepted

time: 0ms

memory: 3804kb

input:

output:

901.0000000000

result:

ok error = 0.000000000

Test #27:

score: 11

Accepted

time: 0ms

memory: 3848kb

input:

output:

942.0833333333

result:

ok error = 0.000000000

Test #28:

score: 11

Accepted

time: 0ms

memory: 3812kb

input:

output:

881.0000000000

result:

ok error = 0.000000000

Test #29:

score: 11

Accepted

time: 0ms

memory: 3708kb

input:

output:

1258.5000000000

result:

ok error = 0.000000000

Test #30:

score: 11

Accepted

time: 0ms

memory: 3804kb

input:

output:

1495.8333333333

result:

ok error = 0.000000000

Test #31:

score: 11

Accepted

time: 0ms

memory: 3808kb

input:

output:

1505.2500000000

result:

ok error = 0.000000000

Test #32:

score: 11

Accepted

time: 0ms

memory: 3916kb

input:

output:

1232.9166666667

result:

ok error = 0.000000000

Test #33:

score: 11

Accepted

time: 0ms

memory: 3704kb

input:

output:

958.5000000000

result:

ok error = 0.000000000

Test #34:

score: 11

Accepted

time: 0ms

memory: 3904kb

input:

output:

1023.3333333333

result:

ok error = 0.000000000

Test #35:

score: 11

Accepted

time: 0ms

memory: 3784kb

input:

output:

1369.3333333333

result:

ok error = 0.000000000

Subtask #4:

score: 12

Accepted

Test #36:

score: 12

Accepted

time: 0ms

memory: 4008kb

input:

output:

112.0000000000

result:

ok error = 0.000000000

Test #37:

score: 12

Accepted

time: 0ms

memory: 3900kb

input:

output:

372.9166666667

result:

ok error = 0.000000000

Test #38:

score: 12

Accepted

time: 1ms

memory: 5848kb

input:

output:

1021.3333333333

result:

ok error = 0.000000000

Test #39:

score: 12

Accepted

time: 0ms

memory: 3968kb

input:

output:

719.5000000000

result:

ok error = 0.000000000

Test #40:

score: 12

Accepted

time: 0ms

memory: 3900kb

input:

output:

997.5309523810

result:

ok error = 0.000000000

Test #41:

score: 12

Accepted

time: 0ms

memory: 3892kb

input:

output:

1174.0071428571

result:

ok error = 0.000000000

Test #42:

score: 12

Accepted

time: 1ms

memory: 4008kb

input:

output:

1127.8833333333

result:

ok error = 0.000000000

Test #43:

score: 12

Accepted

time: 1ms

memory: 3864kb

input:

output:

1750.6000000000

result:

ok error = 0.000000000

Test #44:

score: 12

Accepted

time: 1ms

memory: 3836kb

input:

output:

716.6166666667

result:

ok error = 0.000000000

Test #45:

score: 12

Accepted

time: 1ms

memory: 3836kb

input:

output:

1160.7068181818

result:

ok error = 0.000000000

Test #46:

score: 12

Accepted

time: 1ms

memory: 3972kb

input:

output:

1727.1043456543

result:

ok error = 0.000000000

Test #47:

score: 12

Accepted

time: 1ms

memory: 3968kb

input:

output:

569.0000000000

result:

ok error = 0.000000000

Test #48:

score: 12

Accepted

time: 1ms

memory: 3964kb

input:

output:

1779.5000000000

result:

ok error = 0.000000000

Test #49:

score: 12

Accepted

time: 1ms

memory: 3864kb

input:

output:

1790.8166666667

result:

ok error = 0.000000000

Test #50:

score: 12

Accepted

time: 1ms

memory: 5804kb

input:

output:

1657.0247474747

result:

ok error = 0.000000000

Test #51:

score: 12

Accepted

time: 1ms

memory: 3892kb

input:

output:

1861.5833333333

result:

ok error = 0.000000000

Test #52:

score: 12

Accepted

time: 1ms

memory: 3896kb

input:

output:

1661.0551226551

result:

ok error = 0.000000000

Test #53:

score: 12

Accepted

time: 1ms

memory: 3900kb

input:

output:

1676.9666666667

result:

ok error = 0.000000000

Test #54:

score: 12

Accepted

time: 1ms

memory: 3768kb

input:

output:

1705.3797619048

result:

ok error = 0.000000000

Test #55:

score: 12

Accepted

time: 1ms

memory: 3908kb

input:

output:

1853.2936507937

result:

ok error = 0.000000000

Test #56:

score: 12

Accepted

time: 1ms

memory: 3844kb

input:

output:

1701.4515873016

result:

ok error = 0.000000000

Test #57:

score: 12

Accepted

time: 1ms

memory: 3972kb

input:

output:

1784.7265706516

result:

ok error = 0.000000000

Test #58:

score: 12

Accepted

time: 0ms

memory: 3832kb

input:

output:

1733.1043290043

result:

ok error = 0.000000000

Test #59:

score: 12

Accepted

time: 1ms

memory: 3956kb

input:

output:

2064.8477688978

result:

ok error = 0.000000000

Test #60:

score: 12

Accepted

time: 0ms

memory: 3768kb

input:

output:

1816.2440476190

result:

ok error = 0.000000000

Subtask #5:

score: 0

Wrong Answer

Test #61:

score: 33

Accepted

time: 2ms

memory: 5856kb

input:

output:

324.3333333333

result:

ok error = 0.000000000

Test #62:

score: 33

Accepted

time: 0ms

memory: 4376kb

input:

output:

1892.3205266955

result:

ok error = 0.000000000

Test #63:

score: 33

Accepted

time: 5ms

memory: 4352kb

input:

output:

646.3428571429

result:

ok error = 0.000000000

Test #64:

score: 33

Accepted

time: 5ms

memory: 4316kb

input:

output:

2424.8503110795

result:

ok error = 0.000000000

Test #65:

score: 33

Accepted

time: 13ms

memory: 4348kb

input:

output:

2866.6789228134

result:

ok error = 0.000000000

Test #66:

score: 33

Accepted

time: 12ms

memory: 6156kb

input:

output:

945.4370896389

result:

ok error = 0.000000000

Test #67:

score: 0

Wrong Answer

time: 21ms

memory: 4376kb

input:

output:

984.5740784316

result:

wrong answer read 984.574078432 but expected 984.344500039, error = 0.229578393

Subtask #6:

score: 0

Time Limit Exceeded

Test #81:

score: 0

Time Limit Exceeded

input:

output:

result:

Subtask #7:

score: 0

Wrong Answer

Test #88:

score: 0

Wrong Answer

time: 68ms

memory: 7836kb

input:

output:

416.9732892108

result:

wrong answer read 416.973289211 but expected 368.129761905, error = 48.843527306