oj.uz

Submission #872766

# Submission time Handle Problem Language Result Execution time Memory
872766 2023-11-13T17:25:34 Z HuyQuang_re_Zero Gondola (IOI14_gondola) C++14
100 / 100
 47 ms 7440 KB 
#include <bits/stdc++.h>
#define ll long long
#define db long double
#define II pair <ll,ll>
#define III pair <ll,II>
#define IV pair <vector <int>,vector <int> >
#define TII pair <treap*,treap*>
#define fst first
#define snd second
#define BIT(x,i) ((x>>i)&1)
#define pi acos(-1)
#define to_radian(x) (x*pi/180.0)
#define to_degree(x) (x*180.0/pi)
#define Log(x) (31-__builtin_clz((int)x))
#define LogLL(x) (63-__builtin_clzll((ll)x))
#include "gondola.h"
using namespace std;
int n,i,a[250005];
int valid(int n,int a[])
{
    int last_u=0,last_i=0;
    map <int,bool> d;
    for(i=0;i<n;i++)
    {
        int u=a[i];
        if(d[u]) return 0;
        d[u]=1;
        if(u>n) continue;
        if(last_u>0 && (u-last_u+n)%n!=(i-last_i+n)%n)
            return 0;
        last_u=u; last_i=i;
    }
    return 1;
}
int m,res[250005],pos[250005],last[250005];
int replacement(int n,int a[], int res[])
{
    int ma=0,m=0;
    memset(last,-1,sizeof(last));
    for(i=0;i<n;i++) ma=max(ma,a[i]),last[a[i]]=i;
    for(i=1;i<=n;i++)
        if(last[i]>-1) break;
    if(i>n)
    {
        for(i=0;i<n;i++) a[i]=i+1;
    }
    else
    {
        int u=i,pos=last[i];
        a[pos]=i;
        for(i=pos+1;i<n;i++)
        {
            if(u==n) u=1; else u++;
            a[i]=u;
        }
        u=a[pos];
        for(i=pos-1;i>=0;i--)
        {
            if(u==1) u=n; else u--;
            a[i]=u;
        }
    }
    for(i=0;i<n;i++) pos[a[i]]=i;
    set <int> Replace;
    for(i=1;i<=n;i++)
        if(last[i]==-1) Replace.insert(i);
    for(i=n+1;i<=ma;i++)
        if(last[i]==-1)
        {
            int u=*Replace.begin(); Replace.erase(u);
            a[pos[u]]=i; pos[i]=pos[u];
            Replace.insert(i);
            res[m++]=u;
        }
        else
        {
            int u=a[last[i]]; Replace.erase(u);
            a[pos[u]]=i; pos[i]=pos[u];
            res[m++]=u;
        }
    return m;
}

const ll mod=round(1e9)+9;
ll lt(ll a,ll b)
{
    if(b==0) return 1;
    ll tg=lt(a,b/2);
    return (b%2==0) ? tg*tg%mod : tg*tg%mod*a%mod;
}
int countReplacement(int n,int a[])
{
    if(!valid(n,a)) return 0;
    vector <int> val;
    for(i=0;i<n;i++)
        if(a[i]>n) val.push_back(a[i]);
    int last=n,left=val.size();
    ll res=1;
    if(left==n) res=n;
    sort(val.begin(),val.end());
    for(int x:val)
    {
        res=res*lt(left,x-last-1)%mod;
        last=x; left--;
    }
    return res;
}

/*
int main()
{
    freopen("gondola.inp","r",stdin);
    freopen("gondola.out","w",stdout);
    cin>>n;
    for(i=0;i<n;i++) cin>>a[i];
    cout<<countReplacement(n,a);
}
*/

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2552 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 10 ms 4212 KB Output is correct
7 Correct 6 ms 2652 KB Output is correct
8 Correct 19 ms 6060 KB Output is correct
9 Correct 6 ms 3420 KB Output is correct
10 Correct 24 ms 6632 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 10 ms 4212 KB Output is correct
7 Correct 7 ms 2652 KB Output is correct
8 Correct 19 ms 5980 KB Output is correct
9 Correct 6 ms 3420 KB Output is correct
10 Correct 23 ms 6732 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 3 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 6 ms 2652 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4700 KB Output is correct
2 Correct 1 ms 4700 KB Output is correct
3 Correct 1 ms 4700 KB Output is correct
4 Correct 1 ms 4700 KB Output is correct
5 Correct 1 ms 4700 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4700 KB Output is correct
2 Correct 1 ms 4700 KB Output is correct
3 Correct 1 ms 4700 KB Output is correct
4 Correct 1 ms 4696 KB Output is correct
5 Correct 1 ms 4700 KB Output is correct
6 Correct 1 ms 4700 KB Output is correct
7 Correct 1 ms 4700 KB Output is correct
8 Correct 1 ms 4700 KB Output is correct
9 Correct 1 ms 4700 KB Output is correct
10 Correct 1 ms 4700 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4700 KB Output is correct
2 Correct 1 ms 4700 KB Output is correct
3 Correct 1 ms 4700 KB Output is correct
4 Correct 2 ms 4700 KB Output is correct
5 Correct 1 ms 4708 KB Output is correct
6 Correct 1 ms 4700 KB Output is correct
7 Correct 1 ms 4700 KB Output is correct
8 Correct 1 ms 4700 KB Output is correct
9 Correct 1 ms 4700 KB Output is correct
10 Correct 2 ms 4700 KB Output is correct
11 Correct 6 ms 4956 KB Output is correct
12 Correct 7 ms 4956 KB Output is correct
13 Correct 24 ms 6492 KB Output is correct
14 Correct 6 ms 4952 KB Output is correct
15 Correct 40 ms 6840 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2648 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct

Subtask #8
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2648 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct

Subtask #9
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 0 ms 2392 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 35 ms 6016 KB Output is correct
10 Correct 26 ms 5468 KB Output is correct
11 Correct 10 ms 3420 KB Output is correct
12 Correct 14 ms 3672 KB Output is correct
13 Correct 4 ms 2648 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 1 ms 2392 KB Output is correct
9 Correct 36 ms 6236 KB Output is correct
10 Correct 30 ms 5404 KB Output is correct
11 Correct 9 ms 3416 KB Output is correct
12 Correct 12 ms 3888 KB Output is correct
13 Correct 3 ms 2648 KB Output is correct
14 Correct 40 ms 6484 KB Output is correct
15 Correct 47 ms 7440 KB Output is correct
16 Correct 8 ms 3160 KB Output is correct
17 Correct 30 ms 5456 KB Output is correct
18 Correct 17 ms 4184 KB Output is correct