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c_cpp
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#include "bits/stdc++.h"
using namespace std;
using ll = long long;
using ull = unsigned long long;
using db = long double;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using pdd = pair<db, db>;
using tiii = tuple<int, int, int>;
using str = string;
#define vt vector
#define pb push_back
#define eb emplace_back
#define ins insert
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define sz(x) (int)x.size()
#define mp make_pair
#define mt make_tuple
#define fi first
#define se second
constexpr int maxN = 1e5;
vt<int> parent(maxN + 1, 0), s(maxN + 1, 1);
int leader(int v) {
return (parent[v] == v ? v : parent[v] = leader(parent[v]));
}
void merge(int a, int b) {
a = leader(a);
b = leader(b);
if (s[a] < s[b]) swap(a, b);
s[a] += s[b];
parent[b] = a;
}
void solve() {
parent[maxN] = maxN;
s[maxN] = 1;
int n;
cin >> n;
vt<int> p(n);
vt<int> inds(n);
for (int i = 0; i < n; i++) {
cin >> p[i];
p[i]--;
inds[p[i]] = i;
}
ll ans = 0;
vt<int> bigger(n, 0);
for (int i = 0; i < n; i++) {
int cntL = 1, cntR = 1;
int id = inds[i];
if (id > 0 && leader(maxN) == leader(p[id - 1])) {
cntL += bigger[p[id - 1]];
}
if (id < n - 1 && leader(maxN) != leader(p[id + 1])) {
cntR += bigger[p[id + 1]];
}
bigger[i] = cntL + cntR - 1;
ans += cntL * cntR * (i + 1);
merge(i, maxN);
}
cout << ans;
}
signed main() {
ios::sync_with_stdio(false);
cin.tie(NULL);
// freopen("input.txt", "r", stdin);
// freopen("output.txt", "w", stdout);
int tests = 1;
// cin >> tests;
while (tests--) {
solve();
}
return 0;
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