# include<iostream> # include<cmath> # include<cstdio> using namespace std; int main(){ //OJ1494 int i,j,k,p,e,l,d; 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)==(l+k*33))){ printf("the next triple peak occurs in %d days.\n",p+i*23-d); } } } } return 0; }