为什么90 求助

#include<stdio.h>
#include<iostream>
using namespace std;
int main(){
	string day;
	cin>>day;
	if(day[0]=='J'&&day[1]=='a'&&day[2]=='n')
	{
		cout <<1<<" ";
		if(day[3]=='0') cout <<day[4];
		else cout <<day[3]<<day[4];
	}
	if(day[0]=='F'&&day[1]=='e'&&day[2]=='b')
	{
		cout <<2<<" ";
		if(day[3]=='0') cout <<day[4];
		else cout <<day[3]<<day[4];
	}
	if(day[0]=='M'&&day[1]=='a'&&day[2]=='r')
	{
		cout <<3<<" ";
		if(day[3]=='0') cout <<day[4];
		else cout <<day[3]<<day[4];
	}
	if(day[0]=='A'&&day[1]=='p'&&day[2]=='r')
	{
		cout <<4<<" ";
		if(day[3]=='0') cout <<day[4];
		else cout <<day[3]<<day[4];
	}
	if(day[0]=='M'&&day[1]=='a'&&day[2]=='y')
	{
		cout <<5<<" ";
		if(day[3]=='0') cout <<day[4];
		else cout <<day[3]<<day[4];
	}
	if(day[0]=='J'&&day[1]=='u'&&day[2]=='n')
	{
		cout <<6<<" ";
		if(day[3]=='0') cout <<day[4];
		else cout <<day[3]<<day[4];
	}
	if(day[0]=='J'&&day[1]=='u'&&day[2]=='l')
	{
		cout <<7<<" ";
		if(day[3]=='0') cout <<day[4];
		else cout <<day[3]<<day[4];
	}
	if(day[0]=='A'&&day[1]=='u'&&day[2]=='g')
	{
		cout <<8<<" ";
		if(day[3]=='0') cout <<day[4];
		else cout <<day[3]<<day[4];
	}
	if(day[0]=='S'&&day[1]=='e'&&day[2]=='p')
	{
		cout <<9<<" ";
		if(day[3]=='0') cout <<day[4];
		else cout <<day[3]<<day[4];
	}
	if(day[0]=='O'&&day[1]=='c'&&day[2]=='t')
	{
		cout <<10<<" ";
		if(day[3]=='0') cout <<day[4];
		else cout <<day[3]<<day[4];
	}
	if(day[0]=='N'&&day[1]=='o'&&day[2]=='v')
	{
		cout <<11<<" ";
		if(day[3]=='0') cout <<day[4];
		else cout <<day[3]<<day[4];
	}
	if(day[0]=='D'&&day[1]=='e'&&day[2]=='c')
	{
		cout <<12<<" ";
		if(day[3]=='0') cout <<day[4];
		else cout <<day[3]<<day[4];
	}
	if(day[0]=='J'&&day[1]=='a'&&day[2]=='n')
	{
		cout <<1<<" ";
		if(day[3]=='0') cout <<day[4];
		else cout <<day[3]<<day[4];
	}
	return 0;
}