完整代码
```cpp
#include<iostream>
#include<algorithm>
#include<cstdio>
#include<cstring>
#include<cmath>
#include<map>
#include<set>
#include<queue>
#include<vector>
#include<limits.h>
#define IL inline
#define re register
#define LL long long
#define ULL unsigned long long
#ifdef TH
#define debug printf("Now is %d\n",__LINE__);
#else
#define debug
#endif
using namespace std;
template<class T>inline void read(T&x)
{
char ch=getchar();
int fu;
while(!isdigit(ch)&&ch!='-') ch=getchar();
if(ch=='-') fu=-1,ch=getchar();
x=ch-'0';ch=getchar();
while(isdigit(ch)){x=x*10+ch-'0';ch=getchar();}
x*=fu;
}
inline int read()
{
int x=0,fu=1;
char ch=getchar();
while(!isdigit(ch)&&ch!='-') ch=getchar();
if(ch=='-') fu=-1,ch=getchar();
x=ch-'0';ch=getchar();
while(isdigit(ch)){x=x*10+ch-'0';ch=getchar();}
return x*fu;
}
int G[55];
template<class T>inline void write(T x)
{
int g=0;
if(x<0) x=-x,putchar('-');
do{G[++g]=x%10;x/=10;}while(x);
for(int i=g;i>=1;--i)putchar('0'+G[i]);putchar('\n');
}
#define N 100010
int n,m;
int a[N];
vector<int>color[N*10];
int ans;
int f[N*10];
int getf(int x)
{
if(x==f[x]) return x;
return f[x]=getf(f[x]);
}
int main()
{
// freopen("P3201_7.in","r",stdin);
n=read();
m=read();
for(int i=1;i<=n;i++)
{
a[i]=read();
color[a[i]].push_back(i);
}
for(int i=1;i<N*10;i++) f[i]=i;
ans=1;
for(int i=2;i<=n;i++)
{
if(a[i]!=a[i-1]) ans++;
}
int op,x,y;
while(m--)
{
op=read();
if(op==1)
{
x=read();
y=read();
x=getf(x);
y=getf(y);
if(x==y) continue;
if(color[x].size()<color[y].size()) swap(x,y);
for(int i=0;i<color[y].size();i++)
{
if(color[y][i]-1&&a[color[y][i]-1]==x) ans--;
if(color[y][i]+1<=n&&a[color[y][i]+1]==x) ans--;
}
for(int i=0;i<color[y].size();i++) color[x].push_back(color[y][i]),a[color[y][i]]=x;
color[y].clear();
f[y]=x;
}
else write(ans);
// for(int i=1;i<=n;i++) cout<<a[i]<<" ";
// cout<<endl;
}
return 0;
}
```
by Vanilla_chan @ 2021-02-22 11:47:28
看到之前也有人90pts说是没有特判颜色相等，但是这里是有特判的。
```cpp
if(x==y) continue;
```
by Vanilla_chan @ 2021-02-22 11:49:11
对拍找到了一组DIFF
```
14 26
9 10 17 7 12 21 1 15 24 4 24 13 17 6
1 14 8
2
1 7 2
1 12 4
1 10 12
1 15 4
2
1 10 7
2
2
1 14 7
1 13 1
2
1 6 11
1 8 15
1 3 7
1 1 4
2
2
2
1 6 8
2
1 8 15
1 13 2
2
2
```
out
```
14
14
13
13
13
12
12
12
12
12
12
```
ans
```
14
14
14
14
14
13
13
13
13
13
13
```
by Vanilla_chan @ 2021-02-22 15:23:09
问题已解决。做法全假。
by Vanilla_chan @ 2021-02-22 16:06:43