C++ "Untitled kpcpp"

#include <iostream>
using namespace std;
#define MAXN 20
int x[MAXN], xopt[MAXN], n;
float w[MAXN], c[MAXN], b, bk, fk, fopt = 0;

void print_sol(){
    for(int i = 1; i <= n; i++)
        cout << xopt[i];
    cout << endl;
}

void TRY(int k){
    int tk = bk >= w[k];
    for(int y = 0; y <= tk; y++){
        x[k] = y;
        bk -= w[k] * x[k];
        fk += c[k] * x[k];
        if (k == n){
            if (fk > fopt){
                fopt = fk;
                for(int i = 1; i <= n; i++)
                    xopt[i] = x[i];
            }
        } else TRY(k+1);
        bk += w[k] * x[k];
        fk -= c[k] * x[k];
    }
}

void input(){
    cout << "n , b = "; cin >> n >> b;
    for(int i = 1; i <= n; i++){
        cout << "w[" << i << "] = "; cin >> w[i];
    }
    for(int i = 1; i <= n; i++){
        cout << "c[" << i << "] = "; cin >> c[i];
    }
}
int main(){
    input();
    bk = b;
    fk = fopt = 0;
    TRY(1);
    print_sol();
    return 0;
}