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<bits/stdc++.h>
using namespace std;
int main() {
ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
int n, x; cin >> n >> x;
vector<int> a(n); for(int &p : a) cin >> p;
vector<int> dp; int ans=1;
for(int i=0; i<n; i++) {
for(int j=i; j<n; j++) {
dp.clear();
vector<int> temp=a;
for(int k=i; k<=j; k++) temp[k]+=x;
for(int p : temp) {
auto it=lower_bound(temp.begin(), temp.end(), p);
if(it==temp.end()) dp.push_back(p);
else *it=p;
}
ans=max(ans, (int)dp.size());
}
}
cout << ans << '\n';
return 0;
}
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