#ifndef __DECIMAL_HEADER_INCLUDED__
#define __DECIMAL_HEADER_INCLUDED__

#include <cstdlib>
#include <cstring>
#include <climits>
#include <string>
#include <vector>
using std::string;

typedef std::vector <int> vector;

class Decimal {
    public:
        static const int BASE = 1000000000;
        static const long long BASE2 = (long long)BASE * BASE;

        Decimal ();
        Decimal (const string &s);
        Decimal (const char *s);
        Decimal (int x);
        Decimal (long long x);
        Decimal (const Decimal &b);
        Decimal (const vector &digits, bool is_negative = false);

        bool is_zero() const;
        string to_string() const;
        int to_int() const;
        long long to_long_long() const;
        int compare_with(const Decimal &b) const;
        int compare_with(int x) const;
        int compare_with(long long x) const;

        Decimal & operator = (const string &s);
        Decimal & operator = (const char *s);
        Decimal & operator = (int x);
        Decimal & operator = (long long x);
        Decimal & operator = (const Decimal &b);

        friend Decimal operator + (const Decimal &a, const Decimal &b);
        friend Decimal operator + (const Decimal &a, int x);
        friend Decimal operator + (int x, const Decimal &a);
        friend Decimal operator + (const Decimal &a, long long x);
        friend Decimal operator + (long long x, const Decimal &a);

        friend Decimal operator - (const Decimal &a, const Decimal &b);
        friend Decimal operator - (const Decimal &a, int x);
        friend Decimal operator - (int x, const Decimal &a);
        friend Decimal operator - (const Decimal &a, long long x);
        friend Decimal operator - (long long x, const Decimal &a);

        friend Decimal operator * (const Decimal &a, const Decimal &b);
        friend Decimal operator * (const Decimal &a, int x);
        friend Decimal operator * (int x, const Decimal &a);

        friend Decimal operator / (const Decimal &a, const Decimal &b);
        friend Decimal operator / (const Decimal &a, int x);

        friend Decimal operator % (const Decimal &a, const Decimal &b);
        friend Decimal operator % (const Decimal &a, int x);

        friend bool operator < (const Decimal &a, const Decimal &b);
        friend bool operator < (const Decimal &a, int x);
        friend bool operator < (int x, const Decimal &b);
        friend bool operator < (const Decimal &a, long long x);
        friend bool operator < (long long x, const Decimal &b);

        friend bool operator > (const Decimal &a, const Decimal &b);
        friend bool operator > (const Decimal &a, int x);
        friend bool operator > (int x, const Decimal &b);
        friend bool operator > (const Decimal &a, long long x);
        friend bool operator > (long long x, const Decimal &b);

        friend bool operator <= (const Decimal &a, const Decimal &b);
        friend bool operator <= (const Decimal &a, int x);
        friend bool operator <= (int x, const Decimal &b);
        friend bool operator <= (const Decimal &a, long long x);
        friend bool operator <= (long long x, const Decimal &b);

        friend bool operator >= (const Decimal &a, const Decimal &b);
        friend bool operator >= (const Decimal &a, int x);
        friend bool operator >= (int x, const Decimal &b);
        friend bool operator >= (const Decimal &a, long long x);
        friend bool operator >= (long long x, const Decimal &b);

        friend bool operator == (const Decimal &a, const Decimal &b);
        friend bool operator == (const Decimal &a, int x);
        friend bool operator == (int x, const Decimal &b);
        friend bool operator == (const Decimal &a, long long x);
        friend bool operator == (long long x, const Decimal &b);

        friend bool operator != (const Decimal &a, const Decimal &b);
        friend bool operator != (const Decimal &a, int x);
        friend bool operator != (int x, const Decimal &b);
        friend bool operator != (const Decimal &a, long long x);
        friend bool operator != (long long x, const Decimal &b);

        Decimal & operator += (int x);
        Decimal & operator += (long long x);
        Decimal & operator += (const Decimal &b);

        Decimal & operator -= (int x);
        Decimal & operator -= (long long x);
        Decimal & operator -= (const Decimal &b);

        Decimal & operator *= (int x);
        Decimal & operator *= (const Decimal &b);

        Decimal & operator /= (int x);
        Decimal & operator /= (const Decimal &b);

        Decimal & operator %= (int x);
        Decimal & operator %= (const Decimal &b);

        Decimal & abs();
        Decimal & neg();
        friend Decimal operator - (const Decimal &a);

        friend std::istream & operator >> (std::istream &in, Decimal &b);
        friend std::ostream & operator << (std::ostream &out, const Decimal &b);

        explicit operator int () {return this->to_int();}
        explicit operator long long () {return this->to_long_long();}
        operator void* () {return this->is_zero() ? 0 : this;}
    private:
        static void append_to_string(std::string &s, long long x);

        bool is_neg;
        vector s;
        
        void init();
        void initstr(const char *str);
        Decimal & canonicity();
        friend int __builtin_simple_division(const Decimal &a, const Decimal &b);
};

void Decimal::init() {is_neg = false, s.clear(), s.push_back(0);}

void Decimal::initstr(const char *str) {
    this->init();

    int L = strlen(str);
    if (*str == 45) is_neg = true, ++str, --L;
    if (!L || (L == 1 && *str == 48)) {is_neg = false; return;}

    int i; char tok[10]; tok[9] = 0;
    s.clear();

    for (i = 1; i * 9 <= L; ++i) {
        memcpy(tok, str + (L - i * 9), 9); 
        s.push_back((int)strtol(tok, NULL, 10));
    }

    if (L % 9) {
        memcpy(tok, str, L % 9), tok[L % 9] = 0;
        s.push_back((int)strtol(tok, NULL, 10));
    }

    this->canonicity();
}

Decimal & Decimal::canonicity() {
    for (; s.size() > 1 && !s.back(); s.pop_back());
    if (this->is_zero()) is_neg = false;
    return *this;
}

Decimal::Decimal () {this->init();}

Decimal::Decimal (const string &s) {this->initstr(s.c_str());}
    
Decimal::Decimal (const char *s) {this->initstr(s);}

Decimal::Decimal (int x) {
    this->init(), x < 0 && (is_neg = true, x = -x), s.back() = x % BASE;
    if (x >= BASE) s.push_back(x / BASE);
}

Decimal::Decimal (long long x) {
    this->init(), x < 0 && (is_neg = true, x = -x), s.back() = x % BASE;
    if (x >= BASE) s.push_back(x / BASE % BASE);
    if (x >= BASE2) s.push_back(x / BASE2);
}

Decimal::Decimal (const Decimal &b) {is_neg = b.is_neg, s = b.s;}

Decimal::Decimal (const vector &digits, bool is_negative) {is_neg = is_negative, s = digits, this->canonicity();}

bool Decimal::is_zero() const {return s.size() == 1 && s.back() == 0;}

string Decimal::to_string() const {
    string ret;
    if (is_neg && !this->is_zero()) ret.push_back(45);

    int i = (int)s.size() - 1; char tok[10];
    for (sprintf(tok, "%d", s[i]); ret += tok, i--; sprintf(tok, "%09d", s[i]));

    return ret;
}

int Decimal::to_int() const {
    long long v = this->to_long_long();
    return v >= INT_MAX ? INT_MAX : v <= INT_MIN ? INT_MIN : (int)v;
}

long long Decimal::to_long_long() const {
    unsigned long long v = 0;
    switch (s.size()) {
        case 3u : if (s[2] > 9) return is_neg ? LLONG_MIN : LLONG_MAX; v += s[2] * BASE2;
        case 2u : v += (long long)s[1] * BASE;
        case 1u : v += s[0]; break;
        default : return is_neg ? LLONG_MIN : LLONG_MAX;
    }
    return is_neg ? (v > LLONG_MAX ? LLONG_MIN : -(long long)v) : (v >= LLONG_MAX ? (long long)LLONG_MAX : (long long)v);
}

int Decimal::compare_with(const Decimal &b) const {
    if (is_neg != b.is_neg) return is_neg;
    if (s.size() != b.s.size()) return (s.size() < b.s.size()) ^ is_neg ? -1 : 1;
    for (int i = (int)s.size() - 1; i >= 0; --i)
        if (s[i] != b.s[i]) return (s[i] < b.s[i]) ^ is_neg ? -1 : 1;
    return 0;
}

int Decimal::compare_with(int x) const {return this->compare_with((long long)x);}

int Decimal::compare_with(long long x) const {
    long long v = this->to_long_long();
    if (x == LLONG_MAX) return v != x ? -1 : this->to_string() != "9223372036854775807";
    if (x == LLONG_MIN) return v != x ? 1 : -(this->to_string() != "-9223372036854775808");
    return v < x ? -1 : v > x;
}

Decimal & Decimal::operator = (const string &s) {return this->initstr(s.c_str()), *this;}

Decimal & Decimal::operator = (const char *s) {return this->initstr(s), *this;}

Decimal & Decimal::operator = (int x) {
    this->init(), x < 0 && (is_neg = true, x = -x), s.back() = x % BASE;
    if (x >= BASE) s.push_back(x / BASE);
    return *this;
}

Decimal & Decimal::operator = (long long x) {
    this->init(), x < 0 && (is_neg = true, x = -x), s.back() = x % BASE;
    if (x >= BASE) s.push_back(x / BASE % BASE);
    if (x >= BASE2) s.push_back(x / BASE2);
    return *this;
}

Decimal & Decimal::operator = (const Decimal &b) {return is_neg = b.is_neg, s = b.s, *this;}

#define __DECIMAL_COMPARATOR__(op, neg) \
    bool operator op (const Decimal &a, const Decimal &b) {return a.compare_with(b) op 0;} \
    bool operator op (const Decimal &a, int x) {return a.compare_with(x) op 0;} \
    bool operator op (int x, const Decimal &b) {return b.compare_with(x) neg 0;} \
    bool operator op (const Decimal &a, long long x) {return a.compare_with(x) op 0;} \
    bool operator op (long long x, const Decimal &b) {return b.compare_with(x) neg 0;} 

__DECIMAL_COMPARATOR__(<, >);
__DECIMAL_COMPARATOR__(>, >);
__DECIMAL_COMPARATOR__(<=, >=);
__DECIMAL_COMPARATOR__(>=, <=);
__DECIMAL_COMPARATOR__(==, ==);
__DECIMAL_COMPARATOR__(!=, !=);
#undef __DECIMAL_COMPARATOR__

Decimal & Decimal::abs() {return is_neg = false, *this;}

Decimal & Decimal::neg() {return is_neg ^= !this->is_zero(), *this;}

Decimal operator - (const Decimal &a) {Decimal ret = a; return ret.neg();}

std::istream & operator >> (std::istream &in, Decimal &b) {string s; return in >> s, b.initstr(s.c_str()), in;}

std::ostream & operator << (std::ostream &out, const Decimal &b) {return out << b.to_string();}

void __builtin_abs_add_long_long(vector &s, long long x) {
    if (s.size() < 3u) s.resize(3);
    s[0] += x % Decimal::BASE, s[1] += x / Decimal::BASE % Decimal::BASE, s[2] += x / Decimal::BASE2;
    int i, n = (int)s.size(); s.push_back(0);
    for (i = 0; i < n; ++i) if (s[i] >= Decimal::BASE) s[i + 1] += s[i] / Decimal::BASE, s[i] %= Decimal::BASE;
}

void __builtin_abs_sub_long_long(vector &s, long long x) {
    if (s.size() < 3u) s.resize(3);
    s[0] -= x % Decimal::BASE, s[1] -= x / Decimal::BASE % Decimal::BASE, s[2] -= x / Decimal::BASE2;
    int i, n = (int)s.size(), d;
    for (i = 0; i < n - 1; ++i) if (s[i] < 0) s[i + 1] += d = (s[i] + 1) / Decimal::BASE - 1, s[i] -= d * Decimal::BASE;	
}

Decimal & Decimal::operator += (int x) {return *this += (long long)x;}

Decimal & Decimal::operator += (long long x) {
    if (!x) return *this;
    if (x == LLONG_MIN) return *this -= Decimal("9223372036854775808");
    if (x < 0) return *this -= -x;
    if (!is_neg)
        __builtin_abs_add_long_long(s, x);
    else
        switch (this->compare_with(-x)) {
            case -1 : __builtin_abs_sub_long_long(s, x); break;
            case 0 : return this->init(), *this;
            case 1 : return *this = Decimal(this->to_long_long() + x);
        }
    return this->canonicity();
}

Decimal & Decimal::operator -= (int x) {return *this -= (long long)x;}

Decimal & Decimal::operator -= (long long x) {
    if (!x) return *this;
    if (x == LLONG_MIN) return *this += Decimal("9223372036854775808");
    if (x < 0) return *this += -x;
    if (is_neg)
        __builtin_abs_add_long_long(s, x);
    else
        switch (this->compare_with(x)) {
            case -1 : return *this = Decimal(this->to_long_long() - x);
            case 0 : return this->init(), *this;
            case 1 : __builtin_abs_sub_long_long(s, x); break;
        }
    return this->canonicity();
}

Decimal & Decimal::operator *= (int x) {
    if (!x || this->is_zero()) return this->init(), *this;
    if (x < 0) is_neg ^= 1, x = -x;
    int i, n = s.size(); long long cur = 0;
    s.push_back(0), s.push_back(0);
    for (i = 0; i < n + 2; ++i) {
        cur = (long long)x * s[i] + cur;
        s[i] = cur % BASE, cur /= BASE;
    }
    return this->canonicity();
}

Decimal & Decimal::operator /= (int x) {
    if (this->is_zero()) return *this;
    bool neg = is_neg;
    if (x < 0) is_neg ^= 1, x = -x;
    int i, n = s.size(); long long cur = 0;
    for (i = n - 1; i >= 0; --i) {
        cur = cur * BASE + s[i];
        if (x==2) s[i] = cur >>1;
        else if(x==3) s[i]=cur/3;
        else if(x==4) s[i]=cur/4;
        else s[i]=cur/x;
        cur -= (long long)x * s[i];
    }
    if (neg && cur) __builtin_abs_add_long_long(s, 1ll);
    return this->canonicity();
}

Decimal & Decimal::operator %= (int x) {
    if (x < 0) x = -x;
    int i, n = s.size(); long long cur = 0;
    for (i = n - 1; i >= 0; --i) cur = (cur * BASE + s[i]) % x;
    if (this->is_neg) cur = (cur ? x - cur : 0);
    return *this = Decimal((int)cur);
}

Decimal operator + (const Decimal &a, int x) {Decimal ret = a; return ret += x;}
Decimal operator + (int x, const Decimal &a) {Decimal ret = a; return ret += x;}
Decimal operator + (const Decimal &a, long long x) {Decimal ret = a; return ret += x;}
Decimal operator + (long long x, const Decimal &a) {Decimal ret = a; return ret += x;}

Decimal operator - (const Decimal &a, int x) {Decimal ret = a; return ret -= x;}
Decimal operator - (int x, const Decimal &a) {return -(a - x);}
Decimal operator - (const Decimal &a, long long x) {Decimal ret = a; return ret -= x;}
Decimal operator - (long long x, const Decimal &a) {return -(a - x);}

Decimal operator * (const Decimal &a, int x) {Decimal ret = a; return ret *= x;}
Decimal operator * (int x, const Decimal &a) {Decimal ret = a; return ret *= x;}

Decimal operator / (const Decimal &a, int x) {Decimal ret = a; return ret /= x;}

Decimal operator % (const Decimal &a, int x) {Decimal ret = a; return ret %= x;}

Decimal operator + (const Decimal &a, const Decimal &b) {
    if (a.is_neg == b.is_neg) {
        int i, n = a.s.size(), m = b.s.size(), min, max;
        const Decimal &big = (n < m ? (min = n, max = m, b) : (min = m, max = n, a));
        Decimal ret; ret.is_neg = a.is_neg, ret.s.resize(max + 1);
        for (i = 0; i < min; ++i) {
            ret.s[i] += a.s[i] + b.s[i];
            if (ret.s[i] >= Decimal::BASE) ret.s[i] -= Decimal::BASE, ++ret.s[i + 1];
        }
        for (; i < max; ++i) {
            ret.s[i] += big.s[i];
            if (ret.s[i] >= Decimal::BASE) ret.s[i] -= Decimal::BASE, ++ret.s[i + 1];
        }
        return ret.canonicity();
    } else return a.is_neg ? b - -a : a - -b;
}

Decimal operator - (const Decimal &a, const Decimal &b) {
    if (!a.is_neg && !b.is_neg)
        switch (a.compare_with(b)) {
            case -1 : return -(b - a);
            case 0 : return Decimal();
            default : {
                int i, n = a.s.size(), m = b.s.size();
                Decimal ret = a;
                for (i = 0; i < n; ++i) {
                    i < m ? ret.s[i] -= b.s[i] : 0;
                    if (ret.s[i] < 0) ret.s[i] += Decimal::BASE, --ret.s[i + 1];
                }
                return ret.canonicity();
            }
        }
    else if (a.is_neg && b.is_neg) return -b - -a;
    else return a.is_neg ? -(-a + b) : a + -b;
}

Decimal operator * (const Decimal &a, const Decimal &b) {
    if (a.is_zero() || b.is_zero()) return Decimal();
    int i, j, k, n = a.s.size(), m = b.s.size(); long long cur = 0, carry = 0;
    Decimal ret; ret.is_neg = a.is_neg ^ b.is_neg, ret.s.resize(n + m);
    for (k = 0; k < n + m; ++k) {
        for (k < m ? (i = 0, j = k) : (i = k - m + 1, j = m - 1); i < n && j >= 0; ++i, --j)
            cur = (cur + (long long)a.s[i] * b.s[j]), carry += cur / Decimal::BASE, cur %= Decimal::BASE;
        ret.s[k] = (int)cur, cur = carry % Decimal::BASE, carry /= Decimal::BASE;
    }
    return ret.canonicity();
}

int __builtin_simple_division(const Decimal &a, const Decimal &b) {
    switch (a.compare_with(b)) {
        case -1 : return 0;
        case 0 : return 1;
    }
    int n = a.s.size(), m = b.s.size(), guess_quo; long long B;
    if (m == 1) return a.to_long_long() / b.s.back();
    B = (long long)b.s.back() * Decimal::BASE + b.s[m - 2];
    if (n == m + 1)
#ifdef _GLIBCXX_USE_INT128
        guess_quo = (((__int128)a.s.back() * Decimal::BASE + a.s[n - 2]) * Decimal::BASE + a.s[n - 3] + 1) / B;
#else
        guess_quo = (((long double)a.s.back() * Decimal::BASE + a.s[n - 2]) * Decimal::BASE + a.s[n - 3] + 1) / B, guess_quo += 2;
#endif
    else
        guess_quo = ((long long)a.s.back() * Decimal::BASE + a.s[n - 2] + 1) / B;
//	fprintf(stderr, "  ... Guess Quotient = %d\n", guess_quo);
    for (; a < b * guess_quo; --guess_quo);
//	fprintf(stderr, "  ... Final Quotient = %d\n", guess_quo);
    return guess_quo;
}

Decimal operator / (const Decimal &a, const Decimal &b) {
    if (a.is_zero() || b.is_zero()) return a;
    bool neg = a.is_neg;
    int i, n = a.s.size();
    Decimal cur, ret, B = b; ret.is_neg = a.is_neg ^ b.is_neg, ret.s.resize(n); B.abs();
    for (i = n - 1; i >= 0; --i) {
        cur = cur * Decimal::BASE + a.s[i];
        ret.s[i] = __builtin_simple_division(cur, B); cur -= B * ret.s[i];
    }
    if (neg && !cur.is_zero()) __builtin_abs_add_long_long(ret.s, 1ll);
    return ret.canonicity();
}

Decimal operator % (const Decimal &a, const Decimal &b) {return a - a / b * b;}

Decimal & Decimal::operator += (const Decimal &b) {return *this = *this + b;}

Decimal & Decimal::operator -= (const Decimal &b) {return *this = *this - b;}

Decimal & Decimal::operator *= (const Decimal &b) {return *this = *this * b;}

Decimal & Decimal::operator /= (const Decimal &b) {return *this = *this / b;}

Decimal & Decimal::operator %= (const Decimal &b) {return *this = *this % b;}

#endif
#include<bits/stdc++.h>
using namespace std;
int main(){
    int n,k;
    cin>>n>>k;
    auto st=clock();
    if(k==1){
        if(n==1)puts("1");
        else puts("Poor E.S.!");
        exit(0);
    }
    Decimal s=0,x=1;
    for(int i=1;i<n;i++){
        s+=x;
        if(k>2)x=(s+k-2)/(k-1);
        else x=s;
    }
    cout<<x<<'\n';
    auto ed=clock();
    cerr<<1.0*(ed-st)/CLOCKS_PER_SEC<<'\n';
}