#include<bits/stdc++.h> using namespace std; int main() { int i,n,A=5,B=3,w,j,q,s=0; cin>>n; n*=10; for(i=1;i<=n/8;i++){ for(j=1;j<=n/2;j++){ for(q=1;q<=n/1;q++){ if(i*8+j*2+q*1==n&&i+j+q>30) s++; } } } cout<<s; return 0; } /************************************************************** Problem: 1024 User: lijinkai Language: C++ Result: Accepted Time:8 ms Memory:2072 kb ****************************************************************/