#include <cstdio>
#include <cstring>
#include <iostream>
#include <string>
#include <cmath>
#include <bitset>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <deque>
#include <algorithm>
#include <complex>
#include <unordered_map>
#include <unordered_set>
#include <random>
#include <cassert>
#include <fstream>
#include <utility>
#include <functional>
#include <time.h>
#include <stack>
#include <array>
#define popcount __builtin_popcount
using namespace std;
typedef long long int ll;
typedef pair<int, ll> P;
int n, k;
int a[100010];
ll ans;
const int INF=1e9+7;
const ll INFL=1e18;
void solve(int l, int r){
	if(r-l<=2000){
        for(int i=l; i<=r; i++){
            int mn=INF, cnt=0;
            for(int j=i; j<=r; j++){
                if(mn>a[j]){
                    mn=a[j];
                    cnt=1;
                }else if(mn==a[j]){
                    cnt++;
                }
                if(a[i]+a[j]==k && cnt==1){
                    ans+=(j-i+1);
                }
            }
        }
        return;
	}
    vector<int> vc;
    for(int i=l; i<=r; i++) vc.push_back(a[i]);
    sort(vc.begin(), vc.end());
    vc.erase(unique(vc.begin(), vc.end()), vc.end());
	int m=(l+r)/2;
	int mn=INF, cnt=0;
    vector<vector<P>> mp(vc.size());
	for(int i=m; i>=l; i--){
		if(mn>a[i]){
			mn=a[i];
		}
        mp[(int)(lower_bound(vc.begin(), vc.end(), a[i])-vc.begin())].push_back({mn, m+1-i});
	}
    for(auto &p:mp){
        sort(p.begin(), p.end());
        for(int i=1; i<p.size(); i++) p[i].second+=p[i-1].second;
    }
	mn=INF, cnt=0;
	for(int i=m+1; i<=r; i++){
		if(mn>a[i]){
			mn=a[i], cnt=1;
		}else if(mn==a[i]){
			cnt++;
		}
		if(cnt==1){
            int u=lower_bound(vc.begin(), vc.end(), k-a[i])-vc.begin();
            if(u==vc.size() || vc[u]!=k-a[i]) continue;
			auto v=mp[u];
            if(v.empty()) continue;
            int t=upper_bound(v.begin(), v.end(), P(mn, INFL))-v.begin();
            ans+=((ll)v.size()-t)*(i-m);
            if(t>0) ans+=v.back().second-v[t-1].second;
            else ans+=v.back().second;
		}
	}
    for(auto &p:mp) p.clear();
    mn=INF, cnt=0;
	for(int i=m+1; i<=r; i++){
		if(mn>a[i]){
			mn=a[i];
		}
        mp[(int)(lower_bound(vc.begin(), vc.end(), a[i])-vc.begin())].push_back({mn, i-m});
	}
    for(auto &p:mp){
        sort(p.begin(), p.end());
        for(int i=1; i<p.size(); i++) p[i].second+=p[i-1].second;
    }
	mn=INF, cnt=0;
	for(int i=m; i>=l; i--){
		if(mn>a[i]){
			mn=a[i], cnt=1;
		}else if(mn==a[i]){
			cnt++;
		}
		if(cnt==1){
            int u=lower_bound(vc.begin(), vc.end(), k-a[i])-vc.begin();
            if(u==vc.size() || vc[u]!=k-a[i]) continue;
			auto v=mp[u];
            if(v.empty()) continue;
            int t=upper_bound(v.begin(), v.end(), P(mn, INFL))-v.begin();
            ans+=((ll)v.size()-t)*(m+1-i);
            if(t>0) ans+=v.back().second-v[t-1].second;
            else ans+=v.back().second;
		}
	}
	solve(l, m); solve(m+1, r);
}
int main()
{
	cin>>n>>k;
	for(int i=0; i<n; i++){
		cin>>a[i];
	}
	solve(0, n-1);
	cout<<ans<<endl;
	return 0;
}