結果
| 問題 |
No.2405 Minimal Matrix Decomposition
|
| コンテスト | |
| ユーザー |
👑 potato167
|
| 提出日時 | 2023-08-04 22:07:11 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 1,292 ms / 2,000 ms |
| コード長 | 3,264 bytes |
| コンパイル時間 | 2,602 ms |
| コンパイル使用メモリ | 217,428 KB |
| 最終ジャッジ日時 | 2025-02-15 22:47:26 |
|
ジャッジサーバーID (参考情報) |
judge3 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 46 |
ソースコード
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
using namespace std;
using std::cout;
using std::cin;
using std::endl;
using ll=long long;
using ld=long double;
const ll ILL=2167167167167167167;
const int INF=2100000000;
int mod=998244353;
#define rep(i,a,b) for (int i=(int)(a);i<(int)(b);i++)
#define all(p) p.begin(),p.end()
template<class T> using _pq = priority_queue<T, vector<T>, greater<T>>;
template<class T> ll LB(vector<T> &v,T a){return lower_bound(v.begin(),v.end(),a)-v.begin();}
template<class T> ll UB(vector<T> &v,T a){return upper_bound(v.begin(),v.end(),a)-v.begin();}
template<class T> bool chmin(T &a,const T &b){if(a>b){a=b;return 1;}else return 0;}
template<class T> bool chmax(T &a,const T &b){if(a<b){a=b;return 1;}else return 0;}
template<class T> void So(vector<T> &v) {sort(v.begin(),v.end());}
template<class T> void Sore(vector<T> &v) {sort(v.begin(),v.end(),[](T x,T y){return x>y;});}
void yneos(bool a){if(a) cout<<"Yes\n"; else cout<<"No\n";}
template<class T> void vec_out(vector<T> &p){for(int i=0;i<(int)(p.size());i++){if(i) cout<<" ";cout<<p[i];}cout<<"\n";}
template<class T> T vec_min(vector<T> &a){assert(!a.empty());T ans=a[0];for(auto &x:a) chmin(ans,x);return ans;}
template<class T> T vec_max(vector<T> &a){assert(!a.empty());T ans=a[0];for(auto &x:a) chmax(ans,x);return ans;}
template<class T> T vec_sum(vector<T> &a){assert(!a.empty());T ans=a[0]-a[0];for(auto &x:a) ans+=x;return ans;}
int pop_count(long long a){int res=0;while(a){res+=(a&1),a>>=1;}return res;}
ll jyo(ll x,ll y,ll z){
ll H=y; //ここから
ll a=1,b=(x%z+z)%z,c=1;
while(H>0){
a*=2;
if(H%a!=0){
H-=a/2;
c*=b;
c%=z;
}
b*=b;
b%=z;
} //ここまで
return c;
}
void solve();
// oddloop
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int t=1;
//cin>>t;
rep(i,0,t) solve();
}
void solve(){
cin>>mod;
int N,M;
cin>>N>>M;
vector A(N,vector<ll>(M));
rep(i,0,N) rep(j,0,M) cin>>A[i][j];
if(N==1||M==1){
cout<<"1\n";
cout<<N<<" "<<M<<"\n";
rep(i,0,N) vec_out(A[i]);
return;
}
auto base=A;
vector<int> seen(N);
map<int,int> m;
int C=0;
vector<int> q;
rep(i,0,M){
int ind=0;
while(ind<N){
A[ind][i]%=mod;
if(seen[ind]==0&&A[ind][i]!=0){
seen[ind]=1;
break;
}
ind++;
}
if(ind==N) continue;
m[i]=C;
C++;
q.push_back(ind);
ll tmp=jyo(A[ind][i],mod-2,mod);
rep(j,0,M) A[ind][j]=(A[ind][j]*tmp)%mod;
rep(j,0,N){
if(j==ind) continue;
tmp=A[j][i];
rep(k,0,M) A[j][k]=(A[j][k]-A[ind][k]*tmp%mod+mod)%mod;
}
}
//rep(i,0,N) vec_out(A[i]);
if(C==0){
cout<<"2\n";
cout<<N<<" 1\n";
rep(i,0,N) cout<<"0\n";
cout<<"1 "<<M<<"\n";
rep(i,0,M){
if(i) cout<<" ";
cout<<0;
}
cout<<"\n";
return;
}
if(C*(N+M)>N*M){
cout<<"1\n";
cout<<N<<" "<<M<<"\n";
rep(i,0,N) vec_out(base[i]);
return;
}
cout<<"2\n";
vector X(N,vector<ll>(C));
vector Y(C,vector<ll>(M));
rep(i,0,M){
if(m.count(i)){
rep(j,0,N) X[j][m[i]]=base[j][i];
Y[m[i]][i]=1;
}
else{
rep(j,0,C) Y[j][i]=A[q[j]][i];
}
}
cout<<N<<" "<<C<<"\n";
rep(i,0,N) vec_out(X[i]);
cout<<C<<" "<<M<<"\n";
rep(i,0,C) vec_out(Y[i]);
}
potato167