CCF-CSP-201509-1数列分段

链接:http://118.190.20.162/view.page?gpid=T32

代码：

#include<bits/stdc++.h>

using namespace std;

int main (){
    int n;
    cin>>n;
    int num,atm=-1,ans=0;
    for(int i=0;i<n;i++){
        cin>>num;
        if(num==atm)continue;
        atm=num;
        ans++;
    }
    cout<<ans;
    
    return 0;
}