using namespace std;
bool IsRound(int year){
if((year%100)&&(year%4==0)) return 1;
if((year%100==0)&&(year%400==0)) return 1;
return 0;
}
int main() {
int n;
int year_s[2]= {365*24*60*60, 366*24*60*60};
int month_s[2][12]={{31,28,31,30,31,30,31,31,30,31,30,31},
{31,29,31,30,31,30,31,31,30,31,30,31}};
int day_s = 24*60*60;
int hour_s = 60*60;
int minute_s = 60;
while(cin>>n){
int temp = n;
int year=1970;
int month=1;
int day=1;
int hour=0;
int minute=0;
int second=0;
while(temp>=60){
int flag= IsRound(year);
if(temp>=year_s[flag]) { year++; temp-=year_s[flag]; }
else if(temp>=day_s){
int days = temp/day_s;
temp=temp%day_s;
int i=0;
int flag = IsRound(year);
int hh=31;
while(days>=hh){
days-=month_s[flag][i++];
hh=month_s[flag][i];
}
month+= i;
day+=days;
}else if(temp>=hour_s){
hour=temp/hour_s;
temp%=hour_s;
}else if(temp>=minute_s){
minute = temp/minute_s;
temp%=minute_s;
}
}
second = temp;
cout<<year<<"-";
if(month/10==0) cout<<"0";
cout<<month<<"-";
if(day/10==0) cout<<"0";
cout<<day<<" ";
if(hour/10==0) cout<<"0";
cout<<hour<<":";
if(minute/10==0) cout<<"0";
cout<<minute<<":";
if(second/10==0) cout<<"0";
cout<<second<<endl;
}
return 0;
}
]]>