#include<iostream> using namespace std; /** * OJ-1351 */ int main(){ int qw=0,xm=0,xj=0; int tmp = 0; int time=1; bool flag; while((qw+xm+xj)<=31){ flag = false; if(qw<=10){ qw++; flag=true; } if(xm<=10 && time%2==1) { xm++; flag=true; } if(xj<=10 && time%4==1){ xj++; flag=true; } if(flag) tmp++; time++; } cout<<tmp; return 0; }