#include <bits/stdc++.h>
#define fastio ios::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define endl '\n'
#define int long long
#define all(v) v.begin(), v.end()
//#define x first
//#define y second

using namespace std;
typedef pair<int, int> PII;

const int N = 1e5 + 10;

void solve() {
    int a,b,c;
    cin>>a>>b>>c;
    // cout<<a<<' '<<b<<' '<<c<<endl;
    int l=100,r=1e5;
    while(l<r){
        int mid=l+r+1>>1;
        // cout<<mid<<endl;
        if((mid<=a*2)&&(mid*95<=100*b)&&(mid*99<=c*100)) r=mid;
        else r=mid-1;
    }
    cout<<l<<endl;
    for(int i=1;i<=l;i++) cout<<i<<' ';
} 
signed main() {
    fastio;
    int T;
 T = 1;
    // cin>>T;
    while (T--) solve();

    return 0;
}