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