#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 j=1;;j++){ p+=23; e+=28; i+=33; while(p==e==i){ break;return 0; } } cout<<"the next triple peak occurs in "<<i-d<<"days."; return 0; }