func_code_string: #include <bits/stdc++.h>   using namespace std;   int n, a[100010], w[100010], h[100010];   int main() {     cin >> n;     for (int i = 1; i <= n; i++) scanf( %d%d , &w[i], &h[i]);     ;     a[n] = min(w[n], h[n]);     for (int i = n - 1; i >= 1; i--) {       if (min(w[i], h[i]) >= a[i + 1])         a[i] = min(w[i], h[i]);       else         a[i] = max(w[i], h[i]);       if (a[i] < a[i + 1]) {         printf( NO );         return 0;       }     }     printf( YES );     return 0;   }   