Submission #339188

#	Time	Username	Problem	Language	Result	Execution time	Memory
339188		Kerim	Riddick's Cube (IZhO13_riddicks)	C++17	100 / 100	628 ms	492 KiB

riddicks

#include "bits/stdc++.h"
#define MAXN 100009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second
#define my_little_dodge 46
#define debug(x)  cerr<< #x <<" = "<< x<<endl;
using namespace std;

typedef long long ll;
typedef pair<int,int> PII;
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
int arr[5][5],n,m;
void lrow(int x){
	int tmp=arr[x][0];
	for(int i=0;i+1<m;i++)	
		arr[x][i]=arr[x][i+1];
	arr[x][m-1]=tmp;
}
void rrow(int x){
	int tmp=arr[x][m-1];
	for(int i=m-1;i>0;i--)	
		arr[x][i]=arr[x][i-1];
	arr[x][0]=tmp;
}
void lcol(int x){
	int tmp=arr[0][x];
	for(int i=0;i+1<n;i++)	
		arr[i][x]=arr[i+1][x];
	arr[n-1][x]=tmp;
}
void rcol(int x){
	int tmp=arr[n-1][x];
	for(int i=n-1;i>0;i--)	
		arr[i][x]=arr[i-1][x];
	arr[0][x]=tmp;
}
int ans=100500;
bool son(){
	int ok=1;
	for(int i=0;i<n;i++)
		for(int j=0;j<m;j++)
			ok&=(arr[i][j]==arr[i][0]);
	if(ok)return 1;ok=1;	
	for(int j=0;j<m;j++)
		for(int i=0;i<n;i++)
			ok&=(arr[i][j]==arr[0][j]);
	return ok;
}
void print(){
	for(int i=0;i<n;i++){
		for(int j=0;j<m;j++)
			printf("%d ",arr[i][j]);
		puts("");
	}wr
}
void g(int x,int cur){
	if(x==n){
		if(son())
			ans=min(ans,cur);
		return;
	}
	for(int i=0;i<m;i++){
		g(x+1,cur+min(i,m-i));
		rrow(x);
	}
}
void f(int x,int cur){
	if(x==m){
		g(0,cur);
		return;
	}
	for(int i=0;i<n;i++){
		f(x+1,cur+min(i,n-i));
		rcol(x);
	}
}
int main(){
	//freopen("file.in","r",stdin);
    scanf("%d%d",&n,&m);
    for(int i=0;i<n;i++)
    	for(int j=0;j<m;j++)
    		scanf("%d",&arr[i][j]);
    f(0,0);printf("%d\n",ans);
	return 0;
}

Compilation message (stderr)

riddicks.cpp: In function 'bool son()':
riddicks.cpp:51:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   51 |  if(ok)return 1;ok=1;
      |  ^~
riddicks.cpp:51:17: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   51 |  if(ok)return 1;ok=1;
      |                 ^~
riddicks.cpp: In function 'int main()':
riddicks.cpp:87:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   87 |     scanf("%d%d",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~
riddicks.cpp:90:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   90 |       scanf("%d",&arr[i][j]);
      |       ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 100 / 100