#include<bits/stdc++.h> using namespace std; int main() { int p,e,i,d; cin>>p>>e>>i>>d; for(int t=1;t<924;t++){ for(int q=1;q<=759;q++){ for(int z=1;z<=644;z++){ if((p+t*23==e+q*28)&&p+t*23==i*z*33){ cout<<"the next triple peak occurs in "<<p+t*23-d<<" day."; } } } } return 0; }