#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ int p,e,i,d; cin>>p>>e>>i>>d; for(int l=p;l<=21252;l+=23){ for(int j=e;j<=21252;j+=28){ for(int k=i;k<=21252;k+=33){ if(l==j&&l==k){ cout<<"the next triple peak occurs in "<<l-d<<" days."; return 0; } } } } return 0; }