Submission #1017681

#	Time	Username	Problem	Language	Result	Execution time	Memory
1017681		vivkostov	Gondola (IOI14_gondola)	C++14	60 / 100	12 ms	7772 KiB

gondola

#include<bits/stdc++.h>
#define endl '\n'
#include "gondola.h"
using namespace std;
void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}
struct cell
{
    int v,st;
};
bool cmp(cell a1,cell a2)
{
    return a1.st<a2.st;
}
int n,a[200005],used[1000005],ind[200005];
cell c[200005];
int valid(int n,int seq[])
{
    int br=0;
    for(int i=1;i<=n;i++)
    {
        a[i]=seq[i-1];
    }
    for(int i=1;i<=n;i++)
    {
        if(a[i]<=n)
        {
            if(!br)br=a[i];
            else
            {
                if(a[i]!=br)
                {
                    return 0;
                }
            }
        }
        if(used[a[i]])
        {
            return 0;
        }
        used[a[i]]=1;
        if(br)br++;
        if(br>n)br=1;
    }
    for(int i=n+2;i<=250000;i++)
    {
        if(used[i]&&!used[i-1])
        {
            return 0;
        }
    }
    return 1;
}
int replacement(int n, int seq[], int rseq[])
{
    int st=1,val=1,next=n+1;
    for(int i=1;i<=n;i++)
    {
        a[i]=seq[i-1];
    }
    for(int i=1;i<=n;i++)
    {
        if(a[i]<=n)
        {
            st=i;
            val=a[i];
            break;
        }
    }
    for(int i=st;i<=n;i++)
    {
        ind[i]=val;
        val++;
        if(val>n)val=1;
    }
    for(int i=1;i<st;i++)
    {
        ind[i]=val;
        val++;
    }
    for(int i=1;i<=n;i++)
    {
        c[i].v=ind[i];
        c[i].st=a[i];
    }
    sort(c+1,c+n+1,cmp);
    int br=0;
    for(int i=1;i<=n;i++)
    {
        if(c[i].st>n)
        {
            while(c[i].v!=c[i].st)
            {
                rseq[br]=c[i].v;
                br++;
                c[i].v=next;
                next++;
            }
        }
    }
    return br;
}
long long int fup(long long int base,long long int pow)
{
    long long int otg=1;
    for(int i=0;i<=30;i++)
    {
        if(pow&(1<<i))
        {
            otg*=base;
            otg=otg%1000000009;
        }
        base*=base;
        base=base%1000000009;
    }
}
int countReplacement(int n, int seq[])
{
    long long int otg=1,now=n;
    for(int i=1;i<=n;i++)
    {
        a[i]=seq[i-1];
    }
    sort(a+1,a+n+1);
    for(int i=1;i<=n;i++)
    {
        if(a[i]>n)
        {
            otg=otg*fup(n-i+1,a[i]-now-1);
            otg=otg%1000000009;
            now=a[i];
        }
    }
    if(!valid(n,seq))return 0;
    return otg;
}
/*int main()
{
    speed();
    read();
    return 0;
}
*/

Compilation message (stderr)

gondola.cpp: In function 'long long int fup(long long int, long long int)':
gondola.cpp:120:1: warning: no return statement in function returning non-void [-Wreturn-type]
  120 | }
      | ^

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 10 / 10
• Subtask 4: 5 / 5
• Subtask 5: 10 / 10
• Subtask 6: 20 / 20
• Subtask 7: 5 / 5
• Subtask 8: 0 / 15
• Subtask 9: 0 / 15
• Subtask 10: 0 / 10