/** made by amunduzbaev **/
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/rope>
using namespace __gnu_pbds;
using namespace __gnu_cxx;
using namespace std;
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
#define ub upper_bound
#define lb lower_bound
#define ll long long
#define ld long double
#define pii pair<int, int>
#define pll pair<ll, ll>
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(),x.rend()
#define fastios ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define vll vector<ll>
#define vii vector<int>
#define vpii vector<pii>
#define vpll vector<pll>
#define cnt(a)__builtin_popcount(a)
template<class T> bool umin(T& a, const T& b) {return a > b? a = b, true:false;}
template<class T> bool umax(T& a, const T& b) {return a < b? a = b, true:false;}
typedef tree<pii,null_type,less<pii>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
const int N = 10;
const int mod = 1e9+7;
const ll inf = 1e18;
const ld Pi = acos(-1);
int s, n, m, k, ans, a[N][N], tmp[N][N], rmp[N][N];
int find_bitn(int x, int i){
int bit, in = 0;
while(in <= i) bit = x%n, x/= n, in ++;
return bit;
}
int find_bitm(int x, int i){
int bit, in = 0;
while(in <= i) bit = x%m, x/=m, in ++;
return bit;
}
int movecol(int col, int v){
vii tt(v);
for(int i=0;i<v;i++) tt[i] = tmp[i][col];
for(int i=0;i<n;i++){
if(i+v < n) tmp[i][col] = tmp[i+v][col];
else tmp[i][col] = tt[(i+v)%n];
}
return min(v, m-v);
}
int moverow(int row, int v){
vii tt(v);
for(int i=0;i<v;i++) tt[i] = tmp[row][i];
for(int i=0;i<m;i++){
if(i+v < m) tmp[row][i] = tmp[row][i+v];
else tmp[row][i] = tt[(i+v)%m];
}
return min(v, n-v);
}
void solve(){
cin>>n>>m;
for(int i=0;i<n;i++) for(int j=0;j<m;j++) cin>>a[i][j];
int tn = n, tm = m;
for(int i=1;i<n;i++) tn *= n;
for(int i=1;i<m;i++) tm *= m;
ans = 100500;
for(int i=0;i<tm;i++){
for(int j=0;j<n;j++) for(int l=0;l<m;l++) tmp[j][l] = a[j][l];
int curcost = 0;
for(int j=0;j<m;j++){
int bb = find_bitm(i, j);
if(bb) curcost += movecol(j, bb);
}
for(int j=0;j<n;j++) for(int l=0;l<m;l++) rmp[j][l] = tmp[j][l];
int tmpp = curcost;
for(int j=0;j<tn;j++){
curcost = tmpp;
for(int l=0;l<n;l++){
int bb = find_bitn(j, l);
if(bb) curcost += moverow(l, bb);
}
bool gok = 1;
for(int k=0;k<n && gok;k++){
bool ok = 1;
for(int l=0;l<m-1 && ok;l++)
if(tmp[k][l] != tmp[k][l+1]) ok = 0;
if(!ok) gok = 0;
}if(!gok){
gok = 1;
for(int k=0;gok && k<m;k++){
bool ok = 1;
for(int l=0;l<n-1;l++) if(tmp[l][k] != tmp[l+1][k]) ok = 0;
if(!ok) gok = 0;
}
if(gok) ans = min(ans, curcost);
}else ans = min(ans, curcost);
for(int k=0;k<n;k++) for(int q=0;q<m;q++) tmp[k][q] = rmp[k][q];
}
}
cout<<ans<<"\n";
return;
}
int main(){
fastios
int t = 1;
if(t) solve();
else {
cin>>t;
while (t--) solve();
}
return 0;
}
Compilation message
riddicks.cpp: In function 'int find_bitn(int, int)':
riddicks.cpp:45:9: warning: 'bit' may be used uninitialized in this function [-Wmaybe-uninitialized]
45 | return bit;
| ^~~
riddicks.cpp: In function 'int find_bitm(int, int)':
riddicks.cpp:51:9: warning: 'bit' may be used uninitialized in this function [-Wmaybe-uninitialized]
51 | return bit;
| ^~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
0 ms |
364 KB |
Output is correct |
| 4 |
Correct |
2 ms |
364 KB |
Output is correct |
| 5 |
Correct |
3 ms |
364 KB |
Output is correct |
| 6 |
Incorrect |
2 ms |
364 KB |
Output isn't correct |
| 7 |
Halted |
0 ms |
0 KB |
- |
