// clang-format off #include <bits/stdc++.h> using namespace std; #define ALL(x) (x).begin(), (x).end() template<class C> void mini(C &a5, C b5) { a5 = min(a5, b5); } template<class C> void maxi(C &a5, C b5) { a5 = max(a5, b5); } #ifdef LOCAL const bool debug = true; #else const bool debug = false; #define cerr if (true) {} else cout #endif // clang-format on #define int long long #define double long double const int INF = 1e18; const int mod = 1e9 + 7; const int nax = 1e6 + 100; int gdzie[nax]; int n; int foo(int l, int r, int ile) { if (ile > n) return 0; int len = r - l + 1; ile -= len; if (ile < 0) return 0; int dl = min(l, ile), dr = min(n - r - 1, ile); return (ile + 1) - (ile - dl) - (ile - dr); } int32_t main() { ios_base::sync_with_stdio(0); cin.tie(0); cin >> n; for (int i = 0; i < n; i++) { int a; cin >> a; gdzie[a] = i; } int l = INF, r = -INF; int res = 0; for (int i = n; i > 0; i--) { mini(l, gdzie[i]); maxi(r, gdzie[i]); int dl = n - i + 1; res += foo(l, r, dl * 2 - 1); res += foo(l, r, dl * 2 - 2); } cout << 2 * n + 1 << " " << res << endl; return 0; }/* 5 1 4 3 5 2 */
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 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 | // clang-format off #include <bits/stdc++.h> using namespace std; #define ALL(x) (x).begin(), (x).end() template<class C> void mini(C &a5, C b5) { a5 = min(a5, b5); } template<class C> void maxi(C &a5, C b5) { a5 = max(a5, b5); } #ifdef LOCAL const bool debug = true; #else const bool debug = false; #define cerr if (true) {} else cout #endif // clang-format on #define int long long #define double long double const int INF = 1e18; const int mod = 1e9 + 7; const int nax = 1e6 + 100; int gdzie[nax]; int n; int foo(int l, int r, int ile) { if (ile > n) return 0; int len = r - l + 1; ile -= len; if (ile < 0) return 0; int dl = min(l, ile), dr = min(n - r - 1, ile); return (ile + 1) - (ile - dl) - (ile - dr); } int32_t main() { ios_base::sync_with_stdio(0); cin.tie(0); cin >> n; for (int i = 0; i < n; i++) { int a; cin >> a; gdzie[a] = i; } int l = INF, r = -INF; int res = 0; for (int i = n; i > 0; i--) { mini(l, gdzie[i]); maxi(r, gdzie[i]); int dl = n - i + 1; res += foo(l, r, dl * 2 - 1); res += foo(l, r, dl * 2 - 2); } cout << 2 * n + 1 << " " << res << endl; return 0; }/* 5 1 4 3 5 2 */ |