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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
#759666#9353. Interesting PermutationOOBMABTRAMS#AC ✓90ms4052kbC++17765b2024-11-18 11:05:372024-11-18 11:05:44

Judging History

你现在查看的是最新测评结果

  • [2024-11-18 11:05:44]
  • 评测
  • 测评结果:AC
  • 用时:90ms
  • 内存:4052kb
  • [2024-11-18 11:05:37]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
constexpr int N=1000013;
const int P=1e9+7;
typedef long long ll;
int a[N];
void solve() {
    int n;
    cin>>n;
    for(int i=1;i<=n;i++)cin>>a[i];
    if(a[1]){
        cout<<"0\n";
        return;
    }
    for(int i=1;i<=n;i++)if(a[i]>=n) {
        cout<<"0\n";
        return;
    }
    for(int i=1;i<n;i++)if(a[i]>a[i+1]) {
        cout<<"0\n";
        return;
    }
    //[l,r]
    ll k=0,ans=1;
    for(int i=2;i<=n;i++) {
        if(a[i]==a[i-1])ans*=k--,ans%=P;
        else k+=a[i]-a[i-1]-1,ans*=2,ans%=P;
    }
    cout<<ans<<'\n';
}
signed main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int T=1;cin>>T;
    while(T--)solve();
}

这程序好像有点Bug,我给组数据试试?

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3552kb

input:

3
3
0 2 2
3
0 1 2
3
0 2 3

output:

2
4
0

result:

ok 3 lines

Test #2:

score: 0
Accepted
time: 61ms
memory: 4052kb

input:

10039
14
5 6 7 8 9 10 11 12 13 13 13 13 13 13
14
0 5 6 7 8 9 10 11 12 13 14 14 14 14
1
1
14
0 5 4 8 9 10 11 12 13 13 13 13 13 13
45
0 1 1 2 2 3 5 5 6 6 8 9 11 13 15 17 18 18 20 22 22 24 26 26 26 26 27 27 27 28 30 32 32 33 34 34 34 36 36 38 38 38 39 39 44
24
0 2 3 5 7 9 9 10 11 12 13 14 14 14 14 15 1...

output:

0
0
0
0
0
0
24576
0
0
0
0
0
658159182
0
805306368
8
572589350
12288
2
0
981283070
0
0
2
0
0
0
0
4423680
0
0
14155776
16
0
768
0
0
0
855189487
0
2
0
0
0
0
2
0
2
797370259
0
0
0
0
4
0
0
0
301989888
0
0
0
0
0
0
0
0
0
0
0
0
0
2
0
0
0
0
192
0
0
12288
0
0
2
8
0
0
495514526
0
0
955131071
768
0
0
147456
0
0...

result:

ok 10039 lines

Test #3:

score: 0
Accepted
time: 90ms
memory: 3996kb

input:

20
100000
0 1 2 3 5 6 7 9 10 10 12 12 12 13 14 15 17 17 18 19 21 22 24 26 28 28 28 28 29 31 32 34 35 36 38 39 39 39 41 41 42 44 45 47 48 49 51 53 54 56 58 58 58 60 62 62 64 64 64 66 66 66 66 68 70 70 71 72 72 74 74 75 76 77 77 78 80 80 82 82 84 85 86 86 88 88 89 90 91 91 93 93 95 97 98 100 101 103 1...

output:

202795881
940225306
406525679
536765675
729062616
366047380
66289678
199278830
570456350
993317415
17778389
674797620
787821942
841428534
632185280
579006079
822641126
664256526
482813708
821188194

result:

ok 20 lines

Test #4:

score: 0
Accepted
time: 0ms
memory: 3532kb

input:

1
14
5 6 7 8 9 10 11 12 13 13 13 13 13 13

output:

0

result:

ok single line: '0'

Test #5:

score: 0
Accepted
time: 0ms
memory: 3536kb

input:

1
14
0 5 6 7 8 9 10 11 12 13 14 14 14 14

output:

0

result:

ok single line: '0'

Test #6:

score: 0
Accepted
time: 0ms
memory: 3592kb

input:

1
1
1

output:

0

result:

ok single line: '0'

Test #7:

score: 0
Accepted
time: 0ms
memory: 3592kb

input:

1
14
0 5 4 8 9 10 11 12 13 13 13 13 13 13

output:

0

result:

ok single line: '0'

Extra Test:

score: 0
Extra Test Passed