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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
#214179#2045. cThySecret100ms1172kbC++111.8kb2024-11-15 22:09:012024-11-15 23:28:51

answer

#include <bits/stdc++.h>

using namespace std;

#define int long long
// #define x first
// #define y second
#define File(a) freopen(a".in", "r", stdin), freopen(a".out", "w", stdout)

inline void debug() { cerr << '\n'; }
template<typename Type, typename... Other>
inline void debug(const Type& x, const Other&... y) { cerr << x << ' '; debug(y...); }
#define DEBUG(a...) cerr << "[" << #a << "] = ", debug(a);

typedef long long LL;
typedef pair<int, int> PII;

const int N = 200010;
const int INF = 0x3f3f3f3f;

template<typename Type>
inline void read(Type &res)
{
    res = 0;
    int ch = getchar(), flag = 0;
    while (!isdigit(ch)) flag |= ch == '-', ch = getchar();
    while (isdigit(ch)) res = (res << 3) + (res << 1) + (ch ^ 48), ch = getchar();
    res = flag ? -res : res;
}
template<typename Type, typename... Other>
inline void read(Type &res, Other&... y) { read(res), read(y...); }

int n, ans = -1;
int a[N], w[N];
int per[N], vis[N], idx;

void dfs(int cur)
{
    if (cur > n)
    {
        // for (int i = 2; i <= n; i ++)
        //     for (int j = 1; j < i; j ++) if (per[j] != a[per[i]]) return;

        int res = 0;
        for (int i = 1; i <= n; i ++) res += i * w[per[i]];
        ans = max(ans, res);
        // if (res == 32) for (int i = 1; i <= n; i ++) cout << per[i] << ' ';
        // cout << "\n";
        return;
    }
    for (int i = 1; i <= n; i ++)
    {
        if (vis[i]) continue;
        if (cur == 1 || (!vis[i] && vis[a[i]]))
        {
            per[++ idx] = i, vis[i] = true;
            dfs(cur + 1);
            idx --, vis[i] = false;
        }
    }
}

signed main()
{
    read(n);
    for (int i = 1; i <= n; i ++) read(a[i]);
    for (int i = 1; i <= n; i ++) read(w[i]);
    dfs(1);

    cout << ans << '\n';
    return 0;
}

详细

小提示:点击横条可展开更详细的信息

Test #1:

score: 10
Accepted
time: 0ms
memory: 1172kb

input:

10
2 8 3 4 1 2 4 8 5 8
1 2 8 1 10 2 9 8 8 8

output:

-1

result:

ok "-1"

Test #2:

score: 0
Wrong Answer
time: 0ms
memory: 1172kb

input:

10
0 9 5 5 0 0 0 0 0 0
576848570 9374579 447058478 375476508 17899037 890199416 691424702 96833317 4...

output:

-1

result:

wrong answer 1st words differ - expected: '27663373474', found: '-1'

Test #3:

score: 0
Wrong Answer
time: 0ms
memory: 1172kb

input:

15
0 0 0 12 6 0 0 14 8 0 0 7 6 15 0
1 4 7 1 5 1 1 6 8 6 1 1 2 6 2

output:

-1

result:

wrong answer 1st words differ - expected: '571', found: '-1'

Test #4:

score: 0
Wrong Answer
time: 0ms
memory: 1172kb

input:

15
10 0 13 14 0 0 4 9 0 2 0 0 0 0 10
699156165 159021634 857055962 44497989 345951671 893758337 8465...

output:

-1

result:

wrong answer 1st words differ - expected: '78062614530', found: '-1'

Test #5:

score: 0
Time Limit Exceeded

input:

1000
144 384 112 973 710 47 773 579 421 233 4 657 112 596 133 780 803 571 300 804 34 291 507 270 79 ...

output:


result:


Test #6:

score: 0
Time Limit Exceeded

input:

1000
349 415 281 956 749 201 628 217 723 900 513 106 618 978 176 448 834 704 763 266 466 533 192 379...

output:


result:


Test #7:

score: 0
Time Limit Exceeded

input:

100000
14420 84013 87193 82068 10374 79474 25939 9590 32198 3548 47938 85741 12568 14530 8858 60495 ...

output:


result:


Test #8:

score: 0
Time Limit Exceeded

input:

100000
26403 63914 61602 32321 29105 19251 73439 61190 72905 30337 25317 66634 83841 38470 96206 848...

output:


result:


Test #9:

score: 0
Runtime Error

input:

500000
331714 145478 6577 175958 171774 304559 166867 26414 92325 132061 8297 12915 470473 419957 48...

output:


result:


Test #10:

score: 0
Time Limit Exceeded

input:

500000
392409 161541 72825 120014 449034 320962 490925 62120 211235 236719 211792 410060 31166 20275...

output:


result: