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답안 #1038869

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1038869 2024-07-30T08:31:40 Z vjudge1 Binaria (CCO23_day1problem1) C++17
0 / 25
 1 ms 2512 KB 
#include "bits/stdc++.h"
using namespace std;
#define fi first
#define se second
#define pb emplace_back
#define sz(x) int(x.size())
#define all(x) x.begin(), x.end()
const int mod = 1e6+3;
int n,k;
int a[mod];

void inp(){
    ios_base::sync_with_stdio(0);
    cin.tie(NULL); cout.tie(NULL);

    cin>>n>>k;
    for(int i=1;i<=n-k+1;i++){
        cin>>a[i];
    }
}

int v[mod];

signed main(){
    inp();
    v[1]=1;

    for(int i=2;i<=n-k+1;i++){
        if(a[i]==a[i-1]){
            v[i+k-1]= v[i-1];
        }
        else if(a[i]>a[i-1]){
            v[i+k-1]=1;
        }
        else {
            v[i+k-1]= 0;
        }
    }
    long long total=0, pos =0;
    for(int i=1;i<=k;i++){
        total+=v[i];
        pos += (v[i]==0);
    }
    total = a[1] - total;
    // cerr<<pos<<" "<<total<<"\n";

    double sum=1;
    for(int i=1;i<=total;i++){
        sum= sum* (pos-total+i)/i;
    }
    cout<<sum;
    return 0;
}

Subtask #1
0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2512 KB Output is correct
3 Incorrect 1 ms 2396 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2512 KB Output is correct
3 Incorrect 1 ms 2396 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2512 KB Output is correct
3 Incorrect 1 ms 2396 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2512 KB Output is correct
3 Incorrect 1 ms 2396 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2512 KB Output is correct
3 Incorrect 1 ms 2396 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2512 KB Output is correct
3 Incorrect 1 ms 2396 KB Output isn't correct
4 Halted 0 ms 0 KB -