# include<iostream> using namespace std; int main (){ int qw=0,xm=0,xj=0,time=0,count=0; bool flag=false; while(qw+xm+xj <30){ flag=false; if(time%2==0 && qw<10){ qw=qw+1; flag=true; } if(time%4==0 && xm<10){ xm=xm+1; flag=true; } if(xj<10){ xj=xj+1; flag=true; } if(flag){ count++; } time++; } cout<<count; return 0; }