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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
#630411#7880. Streak Manipulation404Soloplayer#WA 1ms4636kbC++141.5kb2024-10-11 18:23:152024-10-11 18:23:15

Judging History

你现在查看的是最新测评结果

  • [2024-10-11 18:23:15]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:4636kb
  • [2024-10-11 18:23:15]
  • 提交

answer

#include<bits/stdc++.h>
#include<unordered_map>
#define pii pair<int, int>
#define LL long long
#define pll pair<LL, LL>

using namespace std;
typedef long long ll;

LL dp[200015][7];
vector<int> a(200015, 0), nxt(200015, 0);

void solve()
{
    int n, m, k;
    string s;
    cin >> n >> m >> k >> s;
    s = "0" + s + "0";

    for (int i = 1; i <= n; i++)
        a[i] = a[i - 1] + (s[i] == '0');
    nxt[n + 1] = n + 1;
    for (int i = n; i >= 1; i--)
        nxt[i] = (s[i] == '1' ? nxt[i + 1] : i);

    auto check = [&n, &m, &k](int x) -> bool
    {
        for (int i = 0; i <= n + 2; i++)
            dp[i][0] = 0;
        for (int i = 0; i <= n + 2; i++)
            for (int j= 1; j <= k; j++)
                dp[i][j] = 1e9;

        for (int i = 1; i <= n - x + 1; i++)
        {
            for (int j = 0; j < k; j++)
                dp[nxt[i + x] + 1][j + 1] = min(dp[nxt[i + x] + 1][j + 1], dp[i][j] + a[i + x - 1] - a[i - 1]);
            if (dp[i][k] <= m)
                return true;
        }
        for (int i = min(n - x + 2, n + 1); i <= n + 2; i++)
            if (dp[i][k] <= m)
                return true;
        return false;
    };

    LL l = 0, r = n ;
    while (l < r)
    {
        LL mid = l + r + 1 >> 1;

        if (check(mid))
            l = mid;
        else
            r = mid - 1;
    }

    cout << (l ? l : -1) << "\n";
}

int main()
{
    ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);

    int tt = 1;
    //cin >> tt;
    while (tt--)
        solve();
}

詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 4560kb

input:

8 3 2
10110110

output:

3

result:

ok 1 number(s): "3"

Test #2:

score: 0
Accepted
time: 1ms
memory: 4636kb

input:

12 3 3
100100010011

output:

2

result:

ok 1 number(s): "2"

Test #3:

score: 0
Accepted
time: 1ms
memory: 4604kb

input:

4 4 4
0000

output:

-1

result:

ok 1 number(s): "-1"

Test #4:

score: -100
Wrong Answer
time: 0ms
memory: 4420kb

input:

1000 200 5
0001001000101001110010011001101010110101101100010100111110111111010010001100100111100101011100011101011001110010111100100100011001010011000100011111010110100001101110101001110000001000111010000111110100111101100110011010011111000111101001010011000111010111010100101111100000100001011001010...

output:

90

result:

wrong answer 1st numbers differ - expected: '99', found: '90'