結果
問題 | No.283 スライドパズルと魔方陣 |
ユーザー | fumofumofuni |
提出日時 | 2022-09-02 00:28:52 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 59 ms / 2,000 ms |
コード長 | 5,792 bytes |
コンパイル時間 | 2,535 ms |
コンパイル使用メモリ | 215,892 KB |
実行使用メモリ | 6,820 KB |
最終ジャッジ日時 | 2024-11-14 16:59:22 |
合計ジャッジ時間 | 6,972 ms |
ジャッジサーバーID (参考情報) |
judge5 / 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
6,816 KB |
testcase_01 | AC | 2 ms
6,820 KB |
testcase_02 | AC | 2 ms
6,820 KB |
testcase_03 | AC | 2 ms
6,820 KB |
testcase_04 | AC | 2 ms
6,820 KB |
testcase_05 | AC | 2 ms
6,816 KB |
testcase_06 | AC | 2 ms
6,820 KB |
testcase_07 | AC | 1 ms
6,816 KB |
testcase_08 | AC | 2 ms
6,820 KB |
testcase_09 | AC | 2 ms
6,820 KB |
testcase_10 | AC | 2 ms
6,816 KB |
testcase_11 | AC | 3 ms
6,820 KB |
testcase_12 | AC | 2 ms
6,820 KB |
testcase_13 | AC | 2 ms
6,820 KB |
testcase_14 | AC | 2 ms
6,820 KB |
testcase_15 | AC | 2 ms
6,820 KB |
testcase_16 | AC | 2 ms
6,816 KB |
testcase_17 | AC | 2 ms
6,820 KB |
testcase_18 | AC | 3 ms
6,820 KB |
testcase_19 | AC | 3 ms
6,820 KB |
testcase_20 | AC | 3 ms
6,820 KB |
testcase_21 | AC | 8 ms
6,816 KB |
testcase_22 | AC | 6 ms
6,816 KB |
testcase_23 | AC | 9 ms
6,816 KB |
testcase_24 | AC | 7 ms
6,816 KB |
testcase_25 | AC | 7 ms
6,820 KB |
testcase_26 | AC | 9 ms
6,820 KB |
testcase_27 | AC | 33 ms
6,816 KB |
testcase_28 | AC | 59 ms
6,816 KB |
testcase_29 | AC | 47 ms
6,820 KB |
testcase_30 | AC | 36 ms
6,816 KB |
testcase_31 | AC | 49 ms
6,816 KB |
testcase_32 | AC | 36 ms
6,820 KB |
testcase_33 | AC | 47 ms
6,816 KB |
testcase_34 | AC | 35 ms
6,816 KB |
testcase_35 | AC | 47 ms
6,820 KB |
testcase_36 | AC | 35 ms
6,820 KB |
testcase_37 | AC | 47 ms
6,816 KB |
testcase_38 | AC | 36 ms
6,820 KB |
ソースコード
#include<bits/stdc++.h> using namespace std; #define rep(i,n) for(ll i=0;i<n;i++) #define repl(i,l,r) for(ll i=(l);i<(r);i++) #define per(i,n) for(ll i=(n)-1;i>=0;i--) #define perl(i,r,l) for(ll i=r-1;i>=l;i--) #define fi first #define se second #define pb push_back #define ins insert #define pqueue(x) priority_queue<x,vector<x>,greater<x>> #define all(x) (x).begin(),(x).end() #define CST(x) cout<<fixed<<setprecision(x) #define rev(x) reverse(x); using ll=long long; using vl=vector<ll>; using vvl=vector<vector<ll>>; using pl=pair<ll,ll>; using vpl=vector<pl>; using vvpl=vector<vpl>; ll MOD=1000000007; ll MOD9=998244353; int inf=1e9+10; ll INF=1e18; ll dy[8]={1,0,-1,0,1,1,-1,-1}; ll dx[8]={0,1,0,-1,1,-1,1,-1}; template <typename T> inline bool chmax(T &a, T b) { return ((a < b) ? (a = b, true) : (false)); } template <typename T> inline bool chmin(T &a, T b) { return ((a > b) ? (a = b, true) : (false)); } vvl solve1(ll n){ vvl mat(n,vl(n)); ll now=1,r=0,c=n/2; while(now<=n*n){ mat[r][c]=now; now++; r=(r-1+n)%n,c=(c+1+n)%n; if(mat[r][c]){ r=(r+2+n)%n,c=(c-1+n)%n; } } return mat; } vvl solve2(ll n){ vvl mat(n,vl(n)); ll now=1; rep(i,n){ rep(j,n){ if(abs(i-j)%4==0||(i+j)%4==3)mat[i][j]=now; now++; } } now=1; per(i,n){ per(j,n){ if(!(abs(i-j)%4==0||(i+j)%4==3))mat[i][j]=now; now++; } } return mat; } vvl solve3(ll n){ vvl pl=solve1(n/2); rep(i,n/2)rep(j,n/2)pl[i][j]=(pl[i][j]-1)*4; vvl lux(n/2,vl(n/2)); rep(i,n/2)lux[n/2/2+1][i]=1;//u rep(j,n/2){ for(int i=n/2/2+2;i<n/2;i++)lux[i][j]=2;//x; } swap(lux[n/2/2][n/2/2],lux[n/2/2+1][n/2/2]); /*rep(i,n/2){ rep(j,n/2)cout << lux[i][j] <<" ";cout << endl; }*/ vvl mat(n,vl(n)); rep(i,n/2){ rep(j,n/2){ if(lux[i][j]==0){ mat[i*2][j*2]=4; mat[i*2][j*2+1]=1; mat[i*2+1][j*2]=2; mat[i*2+1][j*2+1]=3; } if(lux[i][j]==1){ mat[i*2][j*2]=1; mat[i*2][j*2+1]=4; mat[i*2+1][j*2]=2; mat[i*2+1][j*2+1]=3; } if(lux[i][j]==2){ mat[i*2][j*2]=1; mat[i*2][j*2+1]=4; mat[i*2+1][j*2]=3; mat[i*2+1][j*2+1]=2; } } } rep(i,n/2){ rep(j,n/2){ mat[i*2][j*2]+=pl[i][j]; mat[i*2][j*2+1]+=pl[i][j]; mat[i*2+1][j*2]+=pl[i][j]; mat[i*2+1][j*2+1]+=pl[i][j]; } } return mat; } vvl solve(ll n){ vvl mat; if(n%2)mat=solve1(n); else if(n%4==0)mat=solve2(n); else mat=solve3(n); return mat; } ll inversion(vvl mat){ ll n=mat.size(); rep(i,n){ rep(j,n){ if(mat[i][j]==n*n){ if(i+1<n)swap(mat[i][j],mat[i+1][j]); else if(j+1<n)swap(mat[i][j],mat[i][j+1]); } } } /*rep(i,n){ rep(j,n)cout << mat[i][j] <<" "; cout << endl; }*/ ll ret=0; rep(i,n){ rep(j,n){ rep(k,n){ rep(l,n){ if(i*n+j<k*n+l&&mat[i][j]>mat[k][l])ret++; } } } } return ret; } int main(){ /*vl ep={{11,24,7,20,3},{4,12,25,8,16},{17,5,13,21,9},{10,18,1,14,22},{23,6,19,2,15}}; cout << inversion(ep) << endl; for(ll n=3;n<=50;n++){ vvl ans=solve(n); ll f=inversion(ans); rep(i,n)rev(all(ans[i])); ll g=inversion(ans); /*rep(i,n){ ll left=0,right=n-1; while(left<right){ swap(ans[left][i],ans[right][i]); left++;right--; } } ll h=inversion(ans); rep(i,n)rev(all(ans[i])); ll k=inversion(ans); rep(i,n)swap(ans[i][0],ans[i][n-1]); rep(i,n)swap(ans[i][1],ans[i][n-2]); rep(i,n){ swap(ans[0][i],ans[n-1][i]); } rep(i,n){ swap(ans[1][i],ans[n-2][i]); } ll h=inversion(ans); if(f%2==g%2&&f%2==h%2){ cout << n << endl; cout << f%2 <<" " << g%2 <<" " << h%2 << endl; } } */ ll n;cin >> n; if(n==2)cout << "impossible" << endl,exit(0); if(n==1){ cout << "possible" << endl; cout << 1 << endl;return 0; } vvl mat(n,vl(n)); rep(i,n){ rep(j,n){ cin >> mat[i][j]; if(mat[i][j]==0)mat[i][j]=n*n; } } ll ret=inversion(mat); vvl ans=solve(n); /*rep(i,n){ rep(j,n)cout << mat[i][j] <<" ";cout << endl; } rep(i,n){ rep(j,n)cout << ans[i][j] <<" ";cout << endl; }*/ ll f=inversion(ans); if(ret%2==f%2){ cout << "possible" << endl; rep(i,n){ rep(j,n){ if(j)cout <<" "; cout << ans[i][j]; } cout << endl; } return 0; } rep(i,n)rev(all(ans[i])); ll g=inversion(ans); if(ret%2==g%2){ cout << "possible" << endl; rep(i,n){ rep(j,n){ if(j)cout <<" "; cout << ans[i][j]; } cout << endl; } return 0; } cout << "possible" << endl; random_device rnd;mt19937 mt(rnd()); ll csum=accumulate(all(ans[0]),0LL); while(1){ shuffle(all(ans),mt); ll ret=0; rep(i,n){ ret+=ans[i][i]; } if(ret!=csum)continue; ret=0; rep(i,n){ ret+=ans[n-1-i][i]; } if(ret!=csum)continue; ll h=inversion(ans); //cout << h << endl; if(ret%2==h%2){ rep(i,n){ rep(j,n){ if(j)cout <<" "; cout << ans[i][j]; } cout << endl; } return 0; } } }