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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 |
---|---|---|---|---|---|---|---|---|---|
#841911 | #9967. Imbalanced Teams | ucup-team3555# | RE | 5ms | 19048kb | C++20 | 1.1kb | 2025-01-04 08:48:18 | 2025-01-04 08:48:19 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
const int N=2e3+5,H=1e9+7;
int n,m,a[N],C[N][N],ct[N],s[2],res=0;
int adc(int a,int b){return a+b>=H?a+b-H:a+b;}
int dec(int a,int b){return a<b?a-b+H:a-b;}
int mul(int a,int b){return 1ll*a*b%H;}
void add(int &a,int b){a=adc(a,b);}
void del(int &a,int b){a=dec(a,b);}
int qpow(int a,int b=H-2){
int res=1;
while(b){if(b&1) res=mul(res,a);a=mul(a,a),b>>=1;}
return res;
}
void init(){
for(int i=0;i<N;i++){
C[i][0]=1;
for(int j=1;j<=i;j++) C[i][j]=adc(C[i-1][j-1],C[i-1][j]);
}
}
int main(){
ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
cin>>n>>m,init();
for(int i=1;i<=n;i++) cin>>a[i],ct[a[i]]++;
sort(a+1,a+n+1);
for(int i=m;i>=1;i--) s[0]+=a[i]==a[m],res-=a[i];
for(int i=n-m+1;i<=n;i++) s[1]+=a[i]==a[n-m+1],res+=a[i];
cout<<res<<" ";
if(a[m]==a[n-m+1]){
int tmp=mul(C[ct[a[m]]][s[0]],C[ct[a[m]]-s[0]][s[1]]);
if(s[0]==s[1]) cout<<mul(tmp,qpow(2));
else cout<<tmp;
}else cout<<mul(C[ct[a[m]]][s[0]],C[ct[a[n-m+1]]][s[1]]);
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 2ms
memory: 18528kb
input:
6 2 2 5 7 2 5 2
output:
8 6
result:
ok 2 number(s): "8 6"
Test #2:
score: 0
Accepted
time: 0ms
memory: 18684kb
input:
5 2 1 1 1 1 1
output:
0 15
result:
ok 2 number(s): "0 15"
Test #3:
score: 0
Accepted
time: 2ms
memory: 18968kb
input:
2 1 1 1
output:
0 1
result:
ok 2 number(s): "0 1"
Test #4:
score: 0
Accepted
time: 5ms
memory: 18780kb
input:
2 1 1 2
output:
1 1
result:
ok 2 number(s): "1 1"
Test #5:
score: 0
Accepted
time: 0ms
memory: 18536kb
input:
10 4 3 3 1 2 4 6 2 4 4 1
output:
12 1
result:
ok 2 number(s): "12 1"
Test #6:
score: 0
Accepted
time: 0ms
memory: 19048kb
input:
14 3 57 57 57 57 57 57 57 57 57 57 57 57 57 57
output:
0 30030
result:
ok 2 number(s): "0 30030"
Test #7:
score: -100
Runtime Error
input:
13 5 858336 900782 858336 900782 900782 858336 900782 858336 858336 858336 858336 858336 52093