1020 problem

#include <iostream>
#include<cstdio>
#include<cmath>

using namespace std;

int main()
{
    int year,month,days,x;
    cin>>x;
    year=x/365;
    month=(x/400)%12;
    days=(x-((year*365)+(month*30)));
    if(days==30)
    {
        days=0;
        month=1;
        cout<<year<<" ano(s)"<<endl<<month<<" mes(es)"<<endl<<days<<" dia(s)"<<endl;
    }
    else{
        cout<<year<<" ano(s)"<<endl<<month<<" mes(es)"<<endl<<days<<" dia(s)"<<endl;
    }

return 0;
}