func_code_string: #include <bits/stdc++.h>   using namespace std;   int a[100005], l[100005], r[100005];   int main() {     int n, m, i, j, x, y, pos;     cin >> n >> m;     for (i = 1; i <= n; i++) scanf( %d , &a[i]);     l[1] = r[1] = 0;     for (i = 2; i <= n; i++) {       l[i] = l[i - 1];       if (a[i - 1] > a[i]) l[i]++;       r[i] = r[i - 1];       if (a[i - 1] < a[i]) r[i]++;     }     for (i = 1; i <= m; i++) {       cin >> x >> y;       if (r[x] == r[y] || l[x] == l[y])         cout <<  Yes  << endl;       else {         pos = int(upper_bound(l + 1, l + n + 1, l[x]) - l);         pos--;         if (l[pos] == l[x] && r[pos] == r[y])           cout <<  Yes  << endl;         else           cout <<  No  << endl;       }     }     return 0;   }   