#include using namespace std; const int N = 100010; int a[N]; int n, q; /*ST跳表:快速查询区间内的极大极小值*/ int st1[N][40], st2[N][40]; void build() { for (int i = 1; i <= n; i++) st1[i][0] = a[i], st2[i][0] = a[i]; for (int j = 1; (1 << j) <= n; j++) for (int i = 1; (i + (1 << j) - 1) <= n; i++) { st1[i][j] = max(st1[i][j - 1], st1[i + (1 << (j - 1))][j - 1]); st2[i][j] = min(st2[i][j - 1], st2[i + (1 << (j - 1))][j - 1]); } } int queryMax(int x, int y) { int t = log2(y - x + 1); return max(st1[x][t], st1[y - (1 << t) + 1][t]); } int queryMin(int x, int y) { int t = log2(y - x + 1); return min(st2[x][t], st2[y - (1 << t) + 1][t]); } /* 5 50 60 45 39 78 2 5 答案应该是45 */ signed main() { scanf("%d", &n); for (int i = 1; i <= n; i++) scanf("%d", &a[i]); build(); int x, y; scanf("%d %d", &x, &y); cout << queryMax(x, y) << endl; cout << queryMin(x, y) << endl; }