就是中国剩余定理的应用……

幸好我学了数学基础

1 #include
     
       2 using namespace std; 3 int main(){ 4     int p,e,i,d; 5     int k; 6     int count=1; 7     while(cin>>p>>e>>i>>d){ 8         if(p==-1&&e==-1&&i==-1&&d==-1){ 9             break;10         }11         k=0;12         p=p%23;13         e=e%28;14         i=i%33;15         k=(k+(p*5544))%21252;16         k=(k+(e*14421))%21252;17         k=(k+(i*1288))%21252;18         if(k==0){19             k+=21252;20         }21         if(d==k){22             cout<<"Case "<
      
       <<": the next triple peak occurs in "<<21252<<" days."<
       
        d){25             cout<<"Case "<
        
         <<": the next triple peak occurs in "<
         
          <<" days."<