結果
問題 | No.1916 Making Palindrome on Gird |
ユーザー | riano |
提出日時 | 2022-03-28 22:45:11 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 107 ms / 3,000 ms |
コード長 | 5,539 bytes |
コンパイル時間 | 2,321 ms |
コンパイル使用メモリ | 183,252 KB |
実行使用メモリ | 67,712 KB |
最終ジャッジ日時 | 2024-11-07 13:12:01 |
合計ジャッジ時間 | 4,514 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | AC | 2 ms
5,248 KB |
testcase_04 | AC | 2 ms
5,248 KB |
testcase_05 | AC | 2 ms
5,248 KB |
testcase_06 | AC | 2 ms
5,248 KB |
testcase_07 | AC | 2 ms
5,248 KB |
testcase_08 | AC | 2 ms
5,248 KB |
testcase_09 | AC | 2 ms
5,248 KB |
testcase_10 | AC | 2 ms
5,248 KB |
testcase_11 | AC | 2 ms
5,248 KB |
testcase_12 | AC | 2 ms
5,248 KB |
testcase_13 | AC | 23 ms
23,424 KB |
testcase_14 | AC | 19 ms
19,200 KB |
testcase_15 | AC | 36 ms
30,976 KB |
testcase_16 | AC | 20 ms
16,000 KB |
testcase_17 | AC | 68 ms
56,960 KB |
testcase_18 | AC | 86 ms
67,584 KB |
testcase_19 | AC | 85 ms
67,712 KB |
testcase_20 | AC | 86 ms
67,712 KB |
testcase_21 | AC | 86 ms
67,584 KB |
testcase_22 | AC | 87 ms
67,584 KB |
testcase_23 | AC | 2 ms
5,248 KB |
testcase_24 | AC | 2 ms
5,248 KB |
testcase_25 | AC | 2 ms
5,248 KB |
testcase_26 | AC | 2 ms
5,248 KB |
testcase_27 | AC | 3 ms
5,248 KB |
testcase_28 | AC | 106 ms
67,712 KB |
testcase_29 | AC | 107 ms
67,712 KB |
testcase_30 | AC | 107 ms
67,584 KB |
testcase_31 | AC | 105 ms
67,584 KB |
testcase_32 | AC | 106 ms
67,584 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; #define ll long long #define rep(i,n) for(int i=0;i<n;i++) #define rrep(i,n) for(int i=n-1;i>=0;i--) #define rrep2(i,n,k) for(int i=n-1;i>=n-k;i--) #define vll(n,i) vector<long long>(n,i) #define v2ll(n,m,i) vector<vector<long long>>(n,vll(m,i)) #define v3ll(n,m,k,i) vector<vector<vector<long long>>>(n,v2ll(m,k,i)) #define v4ll(n,m,k,l,i) vector<vector<vector<vector<long long>>>>(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<ll,ll> #define Tp tuple<ll,ll,ll> #define riano_ std::ios::sync_with_stdio(false);std::cin.tie(nullptr) #pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math") //Graph struct graph { long long N; vector<vector<tuple<long long,long long,int>>> G; vector<long long> par_v; vector<long long> par_e; int edge_count = 0; graph(long long n) { N = n; G = vector<vector<tuple<long long,long long,int>>>(N); par_v = vector<long long>(N,-1); par_e = vector<long long>(N,-1); } void unite(long long a,long long b,long long cost = 1,bool directed = false){ G[a].emplace_back(b,cost,edge_count); if(!directed) G[b].emplace_back(a,cost,edge_count); edge_count++; } }; const ll mod = 1e9+7; template<uint64_t mod> 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<rhs.val)?mod:0); val-=rhs.val; return (*this); } constexpr modint &operator*=(const modint rhs) noexcept{ val=val*rhs.val%mod; return (*this); } constexpr modint &operator/=(modint rhs) noexcept{ uint64_t ex=mod-2; modint now=1; while(ex){ now*=((ex&1)?rhs:1); rhs*=rhs,ex>>=1; } return (*this)*=now; } modint & operator++(){ val++; if (val == mod) val = 0; return *this; } modint operator++(int){ modint<mod> 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<mod> mint; mint pw(long long a,long long b,long long m = mod){ if(a%m==0) return mint(0); if(b==0) return mint(1); else if(b%2==0){ long long x = pw(a,b/2,m).val; return mint(x*x); } else{ long long x = pw(a,b-1,m).val; return mint(a*x); } } mint modinv(long long a, long long m = mod) { 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; return mint(u); } #define vm(n,i) vector<mint>(n,i) #define v2m(n,m,i) vector<vector<mint>>(n,vm(m,i)) #define v3m(n,m,k,i) vector<vector<vector<mint>>>(n,v2m(m,k,i)) #define v4m(n,m,k,l,i) vector<vector<vector<vector<mint>>>>(n,v3m(m,k,l,i)) void out(vector<ll> &v){ for(ll x:v) cout << x << " "; cout << "\n"; return; } int main(){ riano_; mint ans = 0; ll N,M,K,H,W,Q,L,R,T; cin >> H >> W; char g[H][W]; rep(i,H){ rep(j,W) cin >> g[i][j]; } if(g[0][0]!=g[H-1][W-1]){ cout << 0 << endl; return 0; } auto dp = v3m((H+W)/2,H,H,0); dp[0][0][H-1] = 1; rep(i,(H+W)/2-1){ rep(j,H){ rep(k,H){ if(dp[i][j][k]==0) continue; rep(l,2){ rep(m,2){ if(j+l<H&&i-j+1-l<W&&k-1+m>=0&&W-1-i+(H-1-k)-m>=0&&g[j+l][i-j+1-l]==g[k-1+m][W-1-i+(H-1-k)-m]){ dp[i+1][j+l][k-1+m] += dp[i][j][k]; } } } } } } // rep(i,(H+W)/2){ // rep(j,H){ // rep(k,H){ // cout << i << " " << j << " " << k << endl; // cout << dp[i][j][k] << endl; // } // } // } if((H+W)%2==0){ rep(i,H) ans += dp[(H+W)/2-1][i][i]; } else{ rep(i,H){ if((H+W)/2-1-i>=0&&(H+W)/2-i<W&&g[i][(H+W)/2-1-i]==g[i][(H+W)/2-i]){ ans += dp[(H+W)/2-1][i][i]; } if(i+1<H&&(H+W)/2-1-i>=0&&(H+W)/2-1-i<W&&g[i][(H+W)/2-1-i]==g[i+1][(H+W)/2-1-i]){ ans += dp[(H+W)/2-1][i][i+1]; } } } cout << ans << endl; }