#include <stdio.h>#define eps 1e-6#define abs(x) (((x) < 0) ? -(x) : x)#define zero(x) (abs(x) < eps)int na, nb;double fa[101], fb[101];int doit(int na, double fa[], int nb, double fb[]){ int i, j; double t; if(na < nb) return doit(nb, fb, na, fa); if(nb == -1) return na > 0; t = fa[na] / fb[nb]; for(i = na - 1, j = nb - 1; j>=0; i--, j--) fa[i] -= t * fb[j]; do { --na; }while(na >= 0 && zero(fa[na])); return doit(na, fa, nb, fb);}int main(){ int i; while(scanf("%d%d", &na, &nb) != EOF) { for (i = na; i >= 0; --i) scanf("%lf", &fa[i]); for (i = nb; i >= 0; --i) scanf("%lf", &fb[i]); puts(doit(na, fa, nb, fb) ? "YES" : "NO"); } return 0; }
