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#include <cmath> #include <cstdio> #include <vector> #include <iostream> #include <algorithm> using namespace std; int main() { int n,k,max = 0; cin>>n; int a[100]={0}; for(int i = 0;i<n;i++){ cin>>k; a[k]++; } for(int i = 0;i<n-1;i++){ if(a[i]+a[i+1]> max) max = a[i]+a[i+1]; } cout<<max; return 0; }
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Picking Numbers
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