#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 x=p+23;x<=21252;x+=23) for(int y=e+28;y<=21252;y+=28) for(int z=i+33;z<=21252;z+=33){ if(x==y&&y==z){ cout<<"the next triple peak occurs in "<<x-d<<" days.";return 0; } } return 0; }