poj 3386 Halloween Holidays

#include <iostream>#include <cstdio>#include <cstdlib>#include <cstring>using namespace std;int main(){    int a1, a2, b1, b2, p;    scanf("%d%d%d%d%d", &a1, &a2, &b1, &b2, &p);    if ((a1 <= b2 && b1 <= p) || (b1 <= a2 && a1 <= p) || a1 + b1 <= p)        printf("Yesn");    else        printf("Non");    return 0;}