#pragma GCC optimize ("O3")
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> ii;
typedef vector<int> vi;
typedef double K;
constexpr int INF = 0x3f3f3f3f;
#define FOR(i, b, e) for(int i = (b); i < (e); i++)
#define TRAV(x, a) for(auto &x: (a))
#define SZ(x) ((int)(x).size())
#define PB push_back
#define X first
#define Y second
void solve() {
int n;
cin >> n;
vector<ii> val(n);
FOR(i, 0, n) {
cin >> val[i].X;
val[i].Y = i;
}
sort(val.rbegin(), val.rend());
int mini = INF, maxi = -INF;
ll ans = 0;
FOR(i, 0, (n + 1) / 2) {
mini = min(mini, val[i].Y);
maxi = max(maxi, val[i].Y);
FOR(dl, i * 2, i * 2 + 2) {
int l = max(maxi - dl + 1, 0);
int r = min(mini + dl, n);
ans += max(r - l - dl + 1, 0);
}
}
cout << n * 2 + 1 << ' ' << ans + (n % 2 == 0) << '\n';
}
int main() {
ios::sync_with_stdio(0);
cin.tie(0);
// int tt; cin >> tt;
// FOR(te, 0, tt) {
// // cout << "Case #" << te + 1 << ": ";
// solve();
// }
solve();
return 0;
}
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | #pragma GCC optimize ("O3") #include <bits/stdc++.h> using namespace std; typedef long long ll; typedef pair<int, int> ii; typedef vector<int> vi; typedef double K; constexpr int INF = 0x3f3f3f3f; #define FOR(i, b, e) for(int i = (b); i < (e); i++) #define TRAV(x, a) for(auto &x: (a)) #define SZ(x) ((int)(x).size()) #define PB push_back #define X first #define Y second void solve() { int n; cin >> n; vector<ii> val(n); FOR(i, 0, n) { cin >> val[i].X; val[i].Y = i; } sort(val.rbegin(), val.rend()); int mini = INF, maxi = -INF; ll ans = 0; FOR(i, 0, (n + 1) / 2) { mini = min(mini, val[i].Y); maxi = max(maxi, val[i].Y); FOR(dl, i * 2, i * 2 + 2) { int l = max(maxi - dl + 1, 0); int r = min(mini + dl, n); ans += max(r - l - dl + 1, 0); } } cout << n * 2 + 1 << ' ' << ans + (n % 2 == 0) << '\n'; } int main() { ios::sync_with_stdio(0); cin.tie(0); // int tt; cin >> tt; // FOR(te, 0, tt) { // // cout << "Case #" << te + 1 << ": "; // solve(); // } solve(); return 0; } |
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