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| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #645940 | #9353. Interesting Permutation | Coffeecat996 | AC ✓ | 87ms | 4448kb | C++14 | 904b | 2024-10-16 20:31:39 | 2024-10-16 20:31:42 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define int long long
const int mod=1e9+7;
vector<int> tt;
//void init()
//{
// tt.push_back(0);
// tt.push_back(1);
// for(int i=2;i<=1e5;i++)
// {
// tt.push_back((tt.back()*i)%mod);
// }
//}
void solve()
{
int n;
cin >> n;
vector<int> a(n);
int flag=1;
int ans=1;
int num=0;
for(int i=0;i<n;i++)
{
cin >> a[i];
}
for(int i=1;i<n;i++)
{
if(a[i]<0 || a[i]>=n || (i>0 && a[i]<a[i-1]))
{
flag=0;
break;
}
if(i!=0 && a[i]!=a[i-1])
{
ans=(ans*2)%mod;
num+=a[i]-a[i-1]-1;
}
else if(i!=0)
{
ans=(ans*num)%mod;
num--;
}
}
if(flag==0 || a[n-1]!=n-1)
{
cout<<"0\n";
return ;
}
cout<< ans<<"\n";
}
signed main()
{
std::ios::sync_with_stdio(false);
std::cin.tie(0);std::cout.tie(0);
int t=1;
std::cin >>t;
while(t--){
solve();
}
return 0;
}
这程序好像有点Bug，我给组数据试试？
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3864kb
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: 67ms
memory: 4448kb
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: 87ms
memory: 4288kb
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: 3556kb
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: 3864kb
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: 3816kb
input:
1 1 1
output:
0
result:
ok single line: '0'
Test #7:
score: 0
Accepted
time: 0ms
memory: 3868kb
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