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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
#488930#7956. Walk Swappingarnold518WA 171ms4148kbC++173.3kb2024-07-24 16:25:002024-07-24 16:25:00

Judging History

你现在查看的是最新测评结果

  • [2024-07-24 16:25:00]
  • 评测
  • 测评结果:WA
  • 用时:171ms
  • 内存:4148kb
  • [2024-07-24 16:25:00]
  • 提交

answer

#pragma GCC optimize ("Ofast")
#pragma GCC optimize ("unroll-loops")

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 3000;
const int INF = 1e9;

const int MOD = 1e9+7;
const int P1 = 7;
struct mint
{
    int x;
    mint() : x(0) {}
    mint(int _x) : x(_x) {}
    mint operator + (int ot) const { return x+ot>=MOD ? x+ot-MOD : x+ot; }
    mint operator - (int ot) const { return x<ot ? x+MOD-ot : x-ot; }
    mint operator - () const { return x ? MOD-x : 0; }
    mint operator * (int ot) const { return 1ll*x*ot%MOD; }
    mint operator += (int ot) { return *this = *this + ot; }
    mint operator -= (int ot) { return *this = *this - ot; }
    mint operator *= (int ot) { return *this = *this * ot; }
    operator int() const { return x; }
    bool operator < (int ot) const { return x<ot; }
};

mint mpow(mint a, ll b)
{
    mint ret=1;
    while(b)
    {
        if(b&1) ret*=a;
        b>>=1; a=a*a;
    }
    return ret;
}
mint inv(mint a) { return mpow(a, MOD-2); }

int N, A[MAXN+10], B[MAXN+10];
mint PP[MAXN+10], IP[MAXN+10];
mint HA[MAXN+10], HB[MAXN+10];
int ans=INF;

int main()
{
    ios_base::sync_with_stdio(false); cin.tie(NULL);
    
    scanf("%d", &N);
    for(int i=1; i<=N; i++) scanf("%d", &A[i]);
    for(int i=1; i<=N; i++) scanf("%d", &B[i]);
    
    {
        vector<int> VA, VB;
        for(int i=1; i<=N; i++) VA.push_back(A[i]);
        for(int i=1; i<=N; i++) VB.push_back(B[i]);
        sort(VA.begin(), VA.end());
        sort(VB.begin(), VB.end());
        if(VA!=VB) return !printf("-1\n");
    }

    if(N==1) return !printf("0\n");

    PP[0]=1; IP[0]=1;
    PP[1]=P1; IP[1]=inv(PP[1]);
    for(int i=2; i<=N; i++) PP[i]=PP[i-1]*PP[1];
    for(int i=2; i<=N; i++) IP[i]=IP[i-1]*IP[1];

    for(int cyc=0; cyc<N; cyc++)
    {
        vector<pii> V, V2, V3;
        for(int i=1; i<=N; i++) HA[i]=HA[i-1]+PP[i]*A[i];
        for(int i=1; i<=N; i++) HB[i]=HB[i-1]+PP[i]*B[i];

        for(int i=1; i<=N; i++) V.push_back({HB[i-1]+(HB[N]-HB[i])*IP[1], i});
        for(int i=2; i<=N; i++) V2.push_back({(HA[N]-HA[i-1])*IP[i-1] + (HA[i-1]-HA[1])*PP[N-i], i});
        for(int i=1; i<N; i++) V3.push_back({(HA[N-1]-HA[i-1])*IP[i-1] + HA[i-1]*PP[N-i], i});

        sort(V.begin(), V.end());
        sort(V2.begin(), V2.end());
        sort(V3.begin(), V3.end());

        for(int l=0, r, j=0; l<V2.size(); l=r)
        {
            for(r=l; r<V2.size() && V2[r].first==V2[l].first; r++);
            int val=INF;
            for(; j<V.size() && V[j].first<=V2[l].first; j++) if(V[j].first==V2[l].first) val=min(val, V[j].second);
            if(val!=INF) for(int i=l; i<r; i++) ans=min(ans, (V2[i].second-2)*N+val-1);
        }
        for(int l=0, r, j=0; l<V3.size(); l=r)
        {
            for(r=l; r<V3.size() && V3[r].first==V3[l].first; r++);
            int val=0;
            for(; j<V.size() && V[j].first<=V3[l].first; j++) if(V[j].first==V3[l].first) val=max(val, V[j].second);
            if(val!=0) for(int i=l; i<r; i++) ans=min(ans, (N-V3[i].second)%(N-1)*N+N-val);
        }

        rotate(A+1, A+2, A+N+1);
        rotate(B+1, B+2, B+N+1);
    }

    if(ans==INF) printf("-1\n");
    else printf("%d\n", ans);
}

詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 3864kb

input:

4
4 3 2 1
3 4 2 1

output:

1

result:

ok single line: '1'

Test #2:

score: 0
Accepted
time: 0ms
memory: 3924kb

input:

6
2 1 1 2 2 1
1 2 2 2 1 1

output:

7

result:

ok single line: '7'

Test #3:

score: 0
Accepted
time: 0ms
memory: 3856kb

input:

6
4 1 3 6 2 5
6 2 1 3 4 5

output:

-1

result:

ok single line: '-1'

Test #4:

score: 0
Accepted
time: 0ms
memory: 3956kb

input:

4
1 2 3 4
4 2 1 3

output:

2

result:

ok single line: '2'

Test #5:

score: 0
Accepted
time: 0ms
memory: 3888kb

input:

6
4 1 3 6 2 5
6 2 5 3 4 1

output:

13

result:

ok single line: '13'

Test #6:

score: 0
Accepted
time: 0ms
memory: 3856kb

input:

6
4 1 3 3 2 5
3 2 5 3 4 1

output:

12

result:

ok single line: '12'

Test #7:

score: 0
Accepted
time: 0ms
memory: 3888kb

input:

4
4 3 2 1
1 3 2 4

output:

1

result:

ok single line: '1'

Test #8:

score: 0
Accepted
time: 0ms
memory: 3860kb

input:

5
4 3 5 2 1
1 3 5 4 2

output:

2

result:

ok single line: '2'

Test #9:

score: 0
Accepted
time: 0ms
memory: 3880kb

input:

5
4 3 5 2 1
1 4 3 5 2

output:

4

result:

ok single line: '4'

Test #10:

score: 0
Accepted
time: 0ms
memory: 3888kb

input:

5
1 1 1 2 1
2 1 1 1 1

output:

2

result:

ok single line: '2'

Test #11:

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

input:

4
4 3 2 1
1 3 2 4

output:

1

result:

ok single line: '1'

Test #12:

score: 0
Accepted
time: 0ms
memory: 3888kb

input:

4
4 3 2 1
1 3 4 2

output:

2

result:

ok single line: '2'

Test #13:

score: 0
Accepted
time: 0ms
memory: 3880kb

input:

10
2 3 1 1 3 4 5 5 6 1
1 1 3 4 5 3 5 1 7 2

output:

-1

result:

ok single line: '-1'

Test #14:

score: 0
Accepted
time: 0ms
memory: 3892kb

input:

5
1 4 5 3 2
5 3 2 1 4

output:

8

result:

ok single line: '8'

Test #15:

score: 0
Accepted
time: 0ms
memory: 4148kb

input:

5
1 2 3 4 5
5 2 1 3 4

output:

3

result:

ok single line: '3'

Test #16:

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

input:

10
1 2 3 4 5 6 7 8 9 10
8 4 2 3 1 5 7 6 9 10

output:

-1

result:

ok single line: '-1'

Test #17:

score: 0
Accepted
time: 0ms
memory: 3944kb

input:

10
1 2 3 2 2 2 1 1 1 1
2 1 1 1 1 1 2 2 3 2

output:

41

result:

ok single line: '41'

Test #18:

score: 0
Accepted
time: 0ms
memory: 3860kb

input:

10
1 1 1 2 2 4 4 4 2 2
1 1 2 2 4 4 2 2 1 4

output:

12

result:

ok single line: '12'

Test #19:

score: 0
Accepted
time: 0ms
memory: 3892kb

input:

12
3 3 3 2 2 2 4 4 2 2 1 3
3 3 2 2 4 4 2 2 2 1 3 3

output:

13

result:

ok single line: '13'

Test #20:

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

input:

12
3 3 2 2 2 2 4 4 2 2 1 2
2 2 2 2 4 4 2 2 2 1 3 3

output:

19

result:

ok single line: '19'

Test #21:

score: 0
Accepted
time: 0ms
memory: 3756kb

input:

12
3 3 2 4 2 2 4 4 2 2 1 2
2 2 2 2 4 4 2 2 4 1 3 3

output:

-1

result:

ok single line: '-1'

Test #22:

score: 0
Accepted
time: 0ms
memory: 3864kb

input:

20
3 4 4 5 1 2 3 2 5 1 1 5 3 2 4 5 1 2 3 5
2 3 5 4 4 5 1 2 3 2 5 3 1 1 5 3 2 4 5 1

output:

49

result:

ok single line: '49'

Test #23:

score: 0
Accepted
time: 0ms
memory: 4144kb

input:

20
3 4 4 5 1 2 3 2 5 1 1 5 3 2 4 5 1 2 3 5
3 2 3 4 5 1 2 3 5 4 4 5 1 2 3 2 5 1 1 5

output:

158

result:

ok single line: '158'

Test #24:

score: 0
Accepted
time: 0ms
memory: 3888kb

input:

100
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
99 1...

output:

109

result:

ok single line: '109'

Test #25:

score: 0
Accepted
time: 2ms
memory: 3888kb

input:

100
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
100 ...

output:

89

result:

ok single line: '89'

Test #26:

score: 0
Accepted
time: 2ms
memory: 4148kb

input:

100
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
51 5...

output:

4924

result:

ok single line: '4924'

Test #27:

score: 0
Accepted
time: 2ms
memory: 3864kb

input:

100
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
51 5...

output:

4905

result:

ok single line: '4905'

Test #28:

score: 0
Accepted
time: 2ms
memory: 3888kb

input:

100
1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 4 4 4 4 4 5 5 5 5 5 6 6 6 6 6 7 7 7 7 7 8 8 8 8 8 9 9 9 9 9 10 10 10 10 10 11 11 11 11 11 12 12 12 12 12 13 13 13 13 13 14 14 14 14 14 15 15 15 15 15 16 16 16 16 16 17 17 17 17 17 18 18 18 18 18 19 19 19 19 19 20 20 20 20 20
9 9 9 9 9 10 10 10 10 10 11 11 11 11 11 1...

output:

3990

result:

ok single line: '3990'

Test #29:

score: 0
Accepted
time: 2ms
memory: 3856kb

input:

100
1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1
3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 ...

output:

125

result:

ok single line: '125'

Test #30:

score: 0
Accepted
time: 0ms
memory: 3796kb

input:

100
1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 4 4 4 4 4 5 5 5 5 5 6 6 6 6 6 7 7 7 7 7 8 8 8 8 8 9 9 9 9 9 10 10 10 10 10 11 11 11 11 11 12 12 12 12 12 13 13 13 13 13 14 14 14 14 14 15 15 15 15 15 16 16 16 16 16 17 17 17 17 17 18 18 18 18 18 19 19 19 19 19 20 20 20 20 20
9 9 9 9 9 10 10 10 10 10 11 11 11 15 11 1...

output:

-1

result:

ok single line: '-1'

Test #31:

score: 0
Accepted
time: 2ms
memory: 4148kb

input:

100
1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1
2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 ...

output:

79

result:

ok single line: '79'

Test #32:

score: 0
Accepted
time: 2ms
memory: 4100kb

input:

100
1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1
2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 ...

output:

-1

result:

ok single line: '-1'

Test #33:

score: 0
Accepted
time: 2ms
memory: 3868kb

input:

100
1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1
1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 ...

output:

0

result:

ok single line: '0'

Test #34:

score: -100
Wrong Answer
time: 171ms
memory: 3852kb

input:

1000
458 51 4 190 103 444 401 456 34 970 169 517 283 66 571 282 233 161 32 376 168 616 993 347 213 597 334 652 471 532 552 987 353 613 665 305 477 632 331 293 939 598 175 813 10 890 423 560 502 857 277 18 283 461 6 231 233 648 929 75 896 807 900 2 582 84 81 107 255 145 909 562 492 58 218 575 7 610 6...

output:

15686

result:

wrong answer 1st lines differ - expected: '243210', found: '15686'