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답안 #743109

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
743109 2023-05-17T08:09:26 Z bgnbvnbv Zoltan (COCI16_zoltan) C++14
35 / 140
 30 ms 3664 KB 
#include<bits/stdc++.h>
#define TASKNAME "codeforce"
#define pb push_back
#define pli pair<int,int>
#define fi first
#define se second
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL);
using namespace std;
using ll=long long;
const ll maxN=2e5;
const ll inf=1e18;
const ll mod=1e9+7;
ll n,a[maxN],b[maxN],dp[maxN][2],cnt[maxN][2];
ll pw(ll x,ll y)
{
    if(y==0) return 1;
    ll x1=pw(x,y/2);
    x1=x1*x1%mod;
    if(y&1) x1=x1*x%mod;
    return x1;
}
void solve()
{
    cin >> n;
    for(int i=1;i<=n;i++) cin >> a[i];
    if(n>1000) return ;
    for(int i=1;i<=n;i++) b[i]=a[n-i+1];
    for(int i=n;i<=2*n-1;i++) b[i]=a[i-n+1];
    ll mx=0;
    for(int i=1;i<=2*n-1;i++)
    {
        dp[i][0]=1;
        cnt[i][0]=1;
        if(i==n)
        {
            dp[i][0]=-inf;
            cnt[i][0]=0;
        }
        else
        {
            for(int j=1;j<i;j++)
            {
                if(j==n) continue;
                if(b[j]<b[i])
                {
                    if(dp[i][0]<dp[j][0]+1)
                    {
                        dp[i][0]=dp[j][0]+1;
                        cnt[i][0]=cnt[j][0];
                    }
                    else if(dp[i][0]==dp[j][0]+1)
                    {
                        cnt[i][0]=cnt[i][0]+cnt[j][0];
                        cnt[i][0]%=mod;
                    }
                }
            }
        }

        dp[i][1]=-inf;
        cnt[i][1]=0;
        if(i==n)
        {
            dp[i][1]=1;
            cnt[i][1]=1;
            for(int j=1;j<i;j++)
            {
                if(b[j]<b[i]&&dp[j][0]>0)
                {
                    if(dp[i][1]<dp[j][0]+1)
                    {
                        dp[i][1]=dp[j][0]+1;
                        cnt[i][1]=cnt[j][0];
                    }
                    else if(dp[i][1]==dp[j][0]+1)
                    {
                        cnt[i][1]=cnt[i][1]+cnt[j][0];
                        cnt[i][1]%=mod;
                    }
                }
            }
        }
        else
        {
            for(int j=1;j<i;j++)
            {
                if(b[j]<b[i]&&dp[j][1]>0)
                {
                    if(dp[i][1]<dp[j][1]+1)
                    {
                        dp[i][1]=dp[j][1]+1;
                        cnt[i][1]=cnt[j][1];
                    }
                    else if(dp[i][1]==dp[j][1]+1)
                    {
                        cnt[i][1]=cnt[i][1]+cnt[j][1];
                        cnt[i][1]%=mod;
                    }
                }
            }
        }
        mx=max({mx,dp[i][0],dp[i][1]});
    }
    ll ans=0;
    for(int i=1;i<=2*n-1;i++)
    {
        //cout << dp[i][0]<<' '<<dp[i][1]<<'\n';
        if(dp[i][0]==mx)
        {
            ans+=cnt[i][0]*pw(2,n-mx)%mod;
        }
        else if(dp[i][1]==mx)
        {
            ans+=cnt[i][1]*pw(2,n-mx)%mod;
        }
        ans%=mod;
    }
    cout <<mx <<' '<<ans;
}
int main()
{
    fastio
    //freopen(TASKNAME".INP","r",stdin);
    //freopen(TASKNAME".OUT","w",stdout);
    solve();
}

Subtask #1
35.0 / 140.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Incorrect 1 ms 340 KB Output isn't correct
7 Incorrect 16 ms 436 KB Output isn't correct
8 Incorrect 14 ms 340 KB Output isn't correct
9 Incorrect 15 ms 332 KB Output isn't correct
10 Incorrect 16 ms 432 KB Output isn't correct
11 Incorrect 21 ms 2736 KB Output isn't correct
12 Incorrect 13 ms 2392 KB Output isn't correct
13 Incorrect 12 ms 2304 KB Output isn't correct
14 Incorrect 21 ms 2604 KB Output isn't correct
15 Incorrect 18 ms 3244 KB Output isn't correct
16 Incorrect 30 ms 3664 KB Output isn't correct
17 Incorrect 17 ms 3156 KB Output isn't correct
18 Incorrect 18 ms 3064 KB Output isn't correct
19 Incorrect 17 ms 3124 KB Output isn't correct
20 Incorrect 18 ms 3064 KB Output isn't correct