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QOJ
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 |
---|---|---|---|---|---|---|---|---|---|
#223631 | #7063. Space Station | veg# | WA | 5ms | 4220kb | C++14 | 649b | 2023-10-22 14:29:19 | 2023-10-22 14:29:20 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
const int maxn=1e5+10;
const int mod=1e9+7;
int a[60];
int jc[maxn];
int ans;
void dfs(int rem,int n,int tmp)
{
if(rem>=50||!n)
{
ans=(ans+1ll*tmp*jc[n])%mod;
return;
}
for(int i=1;i<=rem;i++)
if(a[i])
{
a[i]--;
dfs(rem+i,n-1,1ll*tmp*(a[i]+1)%mod);
a[i]++;
}
}
int main()
{
int n,rem;
scanf("%d%d",&n,&rem);
jc[0]=1;
for(int i=1;i<=n;i++) jc[i]=1ll*jc[i-1]*i%mod;
for(int i=1;i<=n;i++)
{
int x;
scanf("%d",&x);
a[x]++;
}
dfs(rem,n,1);
for(int i=1;i<=a[0];i++) ans=1ll*ans*(n-i+1)%mod;
printf("%d\n",ans);
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 0ms
memory: 3920kb
input:
3 2 1 2 3
output:
4
result:
ok single line: '4'
Test #2:
score: 0
Accepted
time: 0ms
memory: 3968kb
input:
5 1 1 1 1 2 3
output:
54
result:
ok single line: '54'
Test #3:
score: -100
Wrong Answer
time: 5ms
memory: 4220kb
input:
100000 47 25 43 22 17 6 15 17 45 4 14 34 46 22 0 8 2 48 41 6 49 42 21 25 48 43 2 17 27 25 38 31 39 48 13 49 24 30 36 19 29 47 48 1 4 5 12 9 21 39 30 21 8 4 9 45 18 0 3 29 26 18 24 39 31 49 22 4 46 21 27 11 11 7 8 3 26 25 29 4 1 21 34 4 44 39 13 26 33 44 5 17 10 32 37 25 44 34 17 14 40 32 27 39 41 6 ...
output:
940012419
result:
wrong answer 1st lines differ - expected: '268605493', found: '940012419'