#include<stdio.h>
#include<string.h>

int main(void){
    int y,m,d;
    scanf("%d/%d/%d", &y,&m,&d);
    
    int uru;
    if(y%400 == 0){
        uru = 1;
    }else{
        if(y%4==0 && y%100!=0){
            uru = 1;
        }else{
            uru = 0;
        }
    }

    int month[13] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
    if(uru){
        month[2] = 29;
    }

    if(month[m] < d+2){
        d = (d+2) - month[m];
        m += 1;
        if(m > 12){
            m = 1;
            y += 1;
        }
    }else{
        d = d+2;
    }

    if(m>10 && d>10){
        printf("%d/%d/%d\n", y, m, d);
    }else if(m<10 && d<10){
        printf("%d/0%d/0%d\n", y, m, d);
    }else if(m<10 && d>10){
        printf("%d/0%d/%d\n", y, m, d);
    }else{
        printf("%d/%d/0%d\n", y, m, d);
    }
    
    return 0;

}