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