y,m;D[]={0,31,28,31,30,31,30,31,31,30,31,30,31};main(d){scanf("%d/%d/%d",&y,&m,&d);d+=2;if(y%4==0&&y%100||y%400==0)D[2]++;if(d>D[m]){d%=D[m++];if(m>12)y++,m=1;}printf("%d/%02d/%02d\n",y,m,d);}