#include<iostream> #include<cstdio> using namespace std; int main(){ int i,j,k,p,e,l,d; cin>>p>>e>>l>>d; for(i=1;i<=924;i++){ for(j=1;j<=759;j++){ for(k=1;k<=644;k++){ if(((p+i*23)==(e+j*28))&&((p+i*23)==(l+k*33))) printf("the next triple peak occurs in %d days.\n",p+i*23-d); } } } return 0; }