This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
//#include "stub.cpp"
#include<bits/stdc++.h>
using namespace std;
#include "september.h"
#include <vector>
int n,m,p[100005],order[6][100005],st,l[100005],r[100005],par[100005],num[100005];
set<int> s[6];
int f(int a)
{
if(par[a]==a)return a;
return par[a]=f(par[a]);
}
void un(int b,int c)
{
num[f(c)]+=num[f(b)];
par[f(b)]=f(c);
}
int solve(int N, int M, std::vector<int> F, std::vector<std::vector<int>> S)
{
n=N,m=M;
for(int i=1;i<=n;i++)
{
p[i-1]=F[i-1];
}
for(int i=1;i<=m;i++)for(int j=1;j<=n;j++)order[i][j]=S[i-1][j-1];
// for(int i=1;i<n;i++)printf("%d ",p[i]);
// printf("\n");
// for(int i=1;i<=m;i++)
// {
// printf("%d\n",i);
// for(int j=1;j<=n-1;j++)printf("%d ",order[i][j]);
// printf("\n");
// }
int sz=1;
st=1;
while(st<n)
{
for(int i=st;i<n;i++)
{
for(int j=1;j<=m;j++)
{
s[j].insert(order[j][i]);
}
int kmp=0;
for(int j=2;j<=m;j++)if(s[j]==s[1])++kmp;
if(kmp==m-1)
{
l[sz]=st;
r[sz]=i;
st=i+1;
for(int j=1;j<=m;j++)s[j].clear();
++sz;
break;
}
}
}
--sz;
/*printf("%d\n",sz);
for(int i=1;i<=sz;i++)printf("%d %d\n",l[i],r[i]);*/
int target=1,ans=0;
for(int i=0;i<n;i++)par[i]=i,num[i]=1;
for(int i=sz;i>=1;i--)
{
target+=(r[i]-l[i]+1);
for(int j=l[i];j<=r[i];j++)
{
un(order[1][j],p[order[1][j]]);
}
if(num[f(0)]==target)++ans;
}
return ans;
}
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