#include using namespace std; #define ll long long #define rep(i,n) for(int i=0;i=0;i--) #define rrep2(i,n,k) for(int i=n-1;i>=n-k;i--) #define vll(n,i) vector(n,i) #define v2ll(n,m,i) vector>(n,vll(m,i)) #define v3ll(n,m,k,i) vector>>(n,v2ll(m,k,i)) #define v4ll(n,m,k,l,i) vector>>>(n,v3ll(m,k,l,i)) #define all(v) v.begin(),v.end() #define chmin(k,m) k = min(k,m) #define chmax(k,m) k = max(k,m) #define Pr pair #define Tp tuple #define riano_ std::ios::sync_with_stdio(false);std::cin.tie(nullptr) using Graph = vector>; const ll mod = 998244353; template struct modint{ uint64_t val; constexpr modint(const int64_t val_=0) noexcept:val((val_%int64_t(mod)+int64_t(mod))%int64_t(mod)){} constexpr modint operator-() const noexcept{ return modint(*this)=mod-val; } constexpr modint operator+(const modint rhs) const noexcept{ return modint(*this)+=rhs; } constexpr modint operator-(const modint rhs) const noexcept{ return modint(*this)-=rhs; } constexpr modint operator*(const modint rhs) const noexcept{ return modint(*this)*=rhs; } constexpr modint operator/(const modint rhs) const noexcept{ return modint(*this)/=rhs; } constexpr modint &operator+=(const modint rhs) noexcept{ val+=rhs.val; val-=((val>=mod)?mod:0); return (*this); } constexpr modint &operator-=(const modint rhs) noexcept{ val+=((val>=1; } return (*this)*=now; } modint & operator++(){ val++; if (val == mod) val = 0; return *this; } modint operator++(int){ modint res = *this; ++*this; return res; } constexpr bool operator==(const modint rhs) noexcept{ return val==rhs.val; } constexpr bool operator!=(const modint rhs) noexcept{ return val!=rhs.val; } friend constexpr ostream &operator<<(ostream& os,const modint x) noexcept{ return os<<(x.val); } friend constexpr istream &operator>>(istream& is,modint& x) noexcept{ uint64_t t; is>>t,x=t; return is; } }; typedef modint mint; #define vm(n,i) vector(n,i) #define v2m(n,m,i) vector>(n,vm(m,i)) #define v3m(n,m,k,i) vector>>(n,v2m(m,k,i)) #define v4m(n,m,k,l,i) vector>>>(n,v3m(m,k,l,i)) //累乗 aのb乗、正しmを法として求める long long pw(long long a,long long b,long long m){ if(b==0) return 1; else if(b%2==0){ long long x = pw(a,b/2,m); return (x*x)%m; } else{ long long x = pw(a,b-1,m); return (a*x)%m; } } mint sum_r(mint a,mint r, mint n){ if(n==0) return mint(0); mint res = a*mint(pw(r.val,n.val,mod)-1)/(r-mint(1)); return res; } //Combination2 //10^6くらいまで //modはグローバルに定義しておく long long modinv(long long a, long long m) { long long b = m, u = 1, v = 0; while (b) { long long t = a / b; a -= t * b; swap(a, b); u -= t * v; swap(u, v); } u %= m; if (u < 0) u += m; return u; } vector fact; vector invf; ll comb(ll n,ll k){ if(n<0||k<0||k>n) return 0LL; else{ ll a = fact[n]*invf[k]%mod; a = a*invf[n-k]%mod; return a; } } // 最大公約数を求める ll gcd(ll x,ll y){ ll r=1; if(x<0) x *= -1; if(y<0) y *= -1; if(x<=y) swap(x,y); if(y==0) r=0; while(r>0){ r=x%y; x=y; y=r; } return x; } int main() { riano_; ll ans = 0; ll H,W,M; cin >> H >> W >> M; if(W==1){ cout << 1 << endl; return 0; } ll dp[H][W]; rep(i,H){ rep(j,W){ dp[i][j] = 0; } } rep(j,W) dp[0][j] = 1; if(H%2!=0){ cout << 0 << endl; return 0; } rep(i,H-1){ rep(j,W){ if(i%2==0){ if(W%2!=0){ if(j%2!=0) continue; for(int k=2;k=0;k-=2){ dp[i+1][k] += dp[i][j]; dp[i+1][k] %= M; } } } } else{ if(j==0){ dp[i+1][0] += dp[i][j]; dp[i+1][0] %= M; dp[i+1][1] += dp[i][j]; dp[i+1][1] %= M; } else if(j==W-1){ dp[i+1][W-1] += dp[i][j]; dp[i+1][W-1] %= M; dp[i+1][W-2] += dp[i][j]; dp[i+1][W-2] %= M; } else{ dp[i+1][j-1] += dp[i][j]; dp[i+1][j-1] %= M; dp[i+1][j] += dp[i][j]; dp[i+1][j] %= M; dp[i+1][j+1] += dp[i][j]; dp[i+1][j+1] %= M; } } } } rep(i,W){ ans += dp[H-1][i]; } cout << ans%M << endl; }