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Magnets.cpp

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#include<bits/stdc++.h>
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using namespace std;
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int main()
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{
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int n,i,c=0;
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cin>>n;
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int a[100000];
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i=0;
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for(i=0; i<n; i++)
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cin>>a[i];
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for(i=0; i<n; i++)
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{
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if(a[i]!=a[i+1])
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c++;
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}
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cout<<c<<endl;
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return 0;
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}

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