#include int main(){ int a[10], *p, *q, i; for (i = 0; i < 10; ++i){ scanf("%d", &a[i]); } p = &a[0], q = &a[9]; while (p <= q){ if (*p != *q)break; p++; q--; } if (p >= q){ printf("YES\n"); } else { printf("NO\n"); } return 0;}