Artifact db13cb4122e4e0d1a4b96ccdbecf829d112f8a4a
#include <iostream>
#include <sstream>
#include <iomanip>
#include <vector>
#include <string>
#include <map>
#include <set>
#include <algorithm>
#include <numeric>
#include <iterator>
#include <functional>
#include <complex>
#include <queue>
#include <stack>
#include <cmath>
#include <cassert>
#include <tuple>
using namespace std;
typedef long long LL;
typedef complex<double> CMP;
class TaroJiroGrid { public:
int getNumber(vector <string> grid)
{
const int H = grid.size();
const int W = grid[0].size();
const string Change[2] = {string(W, 'B'), string(W, 'W')};
// 0
if(ok(grid))
return 0;
// 1
for(int y1=0; y1<H; ++y1) for(int c1=0; c1<2; ++c1) {
auto t1 = grid[y1];
grid[y1] = Change[c1];
if(ok(grid)) return 1;
grid[y1] = t1;
}
return 2;
}
bool ok(const vector<string>& g)
{
const int H = g.size();
const int W = g[0].size();
for(int x=0; x<W; ++x) {
int nb=0, nw=0;
for(int y=0; y<H; ++y)
{
if(g[y][x]=='B') nb++, nw=0;
else nb=0, nw++;
if(nw>H/2 || nb>H/2)
return false;
}
}
return true;
}
};
// BEGIN CUT HERE
#include <ctime>
double start_time; string timer()
{ ostringstream os; os << " (" << int((clock()-start_time)/CLOCKS_PER_SEC*1000) << " msec)"; return os.str(); }
template<typename T> ostream& operator<<(ostream& os, const vector<T>& v)
{ os << "{ ";
for(typename vector<T>::const_iterator it=v.begin(); it!=v.end(); ++it)
os << '\"' << *it << '\"' << (it+1==v.end() ? "" : ", "); os << " }"; return os; }
void verify_case(const int& Expected, const int& Received) {
bool ok = (Expected == Received);
if(ok) cerr << "PASSED" << timer() << endl; else { cerr << "FAILED" << timer() << endl;
cerr << "\to: \"" << Expected << '\"' << endl << "\tx: \"" << Received << '\"' << endl; } }
#define CASE(N) {cerr << "Test Case #" << N << "..." << flush; start_time=clock();
#define END verify_case(_, TaroJiroGrid().getNumber(grid));}
int main(){
CASE(0)
string grid_[] = {"WB",
"BB"};
vector <string> grid(grid_, grid_+sizeof(grid_)/sizeof(*grid_));
int _ = 1;
END
CASE(1)
string grid_[] = {"WB",
"WW"};
vector <string> grid(grid_, grid_+sizeof(grid_)/sizeof(*grid_));
int _ = 1;
END
CASE(2)
string grid_[] = {"WB",
"WB"};
vector <string> grid(grid_, grid_+sizeof(grid_)/sizeof(*grid_));
int _ = 2;
END
CASE(3)
string grid_[] = {"WBBW",
"WBWB",
"WWBB",
"BWWW"};
vector <string> grid(grid_, grid_+sizeof(grid_)/sizeof(*grid_));
int _ = 2;
END
CASE(4)
string grid_[] = {"WBBWBB",
"BBWBBW",
"WWBWBW",
"BWWBBB",
"WBWBBW",
"WWWBWB"};
vector <string> grid(grid_, grid_+sizeof(grid_)/sizeof(*grid_));
int _ = 1;
END
/*
CASE(5)
string grid_[] = ;
vector <string> grid(grid_, grid_+sizeof(grid_)/sizeof(*grid_));
int _ = ;
END
CASE(6)
string grid_[] = ;
vector <string> grid(grid_, grid_+sizeof(grid_)/sizeof(*grid_));
int _ = ;
END
*/
}
// END CUT HERE