1:70point

#pragma GCC optimize(2)
#pragma GCC optimize(3,"Ofast","inline")
#include<bits/stdc++.h>//±ê׼ͷÎļþ
#define int long long//»ù±¾±£Ö¤Ò»¶¨¿ªlonglong
using namespace std;//±ØÒª¸ñʽ
int ans;
signed main()//¿¾main°ü
{
 	//ios::sync_with_stdio(false);//¼Ó¿ìËÙ¶È
 	int m,d;char a;cin>>m>>a>>d;
 	if(m>12)ans++;
 	if(d>31||(m==2&&d>28))ans++;
 	cout<<ans;
	return 0;//Æíµ»AC
}

2:50point

#pragma GCC optimize(2)
#pragma GCC optimize(3,"Ofast","inline")
#include<bits/stdc++.h>//±ê׼ͷÎļþ
#define int long long//»ù±¾±£Ö¤Ò»¶¨¿ªlonglong
using namespace std;//±ØÒª¸ñʽ
int ans;
signed main()//¿¾main°ü
{
 	//ios::sync_with_stdio(false);//¼Ó¿ìËÙ¶È
 	int m,d;char a;cin>>m>>a>>d;
 	if(m>12)
 	{
 		m%=10;
 		ans++;
 	}
 	if((m==2&&d>28)||((m==1||m==3||m==5||m==7||m==8||m==10||m==12)&&d>31)||((m==4||m==6||m==9||m==11)&&d>30))ans++;
 	cout<<ans;
	return 0;//Æíµ»AC
}

dev乱码懒得管了
第一个我就直接判断月和日,但是看hack的帖子发现有虫子就改成第二个,然鹅多WA了2个......
但我认为第二个明显更正确一点,可是虫子到底在哪呢?