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LargestCircle.cpp
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#include <iostream>
#include <sstream>
#include <vector>
#include <algorithm>
#include <set>
#include <map>
using namespace std;
class LargestCircle
{
public:
int radius(vector <string> grid)
{
int w = grid[0].size(), h = grid.size();
int m = min(w, h);
for(int r = m/2; r >= 1; r--)
for(int a = r; a <= h-r; a++){
for(int b = r; b <= w-r; b++){
// cout<<r<<" "<<a<<" "<<b<<endl;
bool flag = true;
for(int x = a-r; x < a+r && flag; x++)
for(int y = b-r; y < b+r && flag; y++)
if(!(((x-a)*(x-a)+(y-b)*(y-b) <= r*r && (x-a+1)*(x-a+1)+(y-b)*(y-b) <= r*r && (x-a)*(x-a)+(y-b+1)*(y-b+1) <= r*r && (x-a+1)*(x-a+1)+(y-b+1)*(y-b+1) <= r*r) ||
((x-a)*(x-a)+(y-b)*(y-b) >= r*r && (x-a+1)*(x-a+1)+(y-b)*(y-b) >= r*r && (x-a)*(x-a)+(y-b+1)*(y-b+1) >= r*r && (x-a+1)*(x-a+1)+(y-b+1)*(y-b+1) >= r*r))){
if(grid[x][y] == '#')
flag = false;
// else cout<<a<<" "<<b<<" "<<x<<" "<<y<<" "<<r<<endl;
}
if(flag) return r;
}
}
return 0;
}
// BEGIN CUT HERE
public:
void run_test(int Case) { if ((Case == -1) || (Case == 0)) test_case_0(); if ((Case == -1) || (Case == 1)) test_case_1(); if ((Case == -1) || (Case == 2)) test_case_2(); if ((Case == -1) || (Case == 3)) test_case_3(); if ((Case == -1) || (Case == 4)) test_case_4(); if ((Case == -1) || (Case == 5)) test_case_5(); if ((Case == -1) || (Case == 6)) test_case_6(); }
private:
template <typename T> string print_array(const vector<T> &V) { ostringstream os; os << "{ "; for (typename vector<T>::const_iterator iter = V.begin(); iter != V.end(); ++iter) os << '\"' << *iter << "\","; os << " }"; return os.str(); }
void verify_case(int Case, const int &Expected, const int &Received) { cerr << "Test Case #" << Case << "..."; if (Expected == Received) cerr << "PASSED" << endl; else { cerr << "FAILED" << endl; cerr << "\tExpected: \"" << Expected << '\"' << endl; cerr << "\tReceived: \"" << Received << '\"' << endl; } }
void test_case_0() { string Arr0[] = { "####",
"#..#",
"#..#",
"####" }; vector <string> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 1; verify_case(0, Arg1, radius(Arg0)); }
void test_case_1() { string Arr0[] = { "############",
"###......###",
"##.######.##",
"#.########.#",
"#.##..####.#",
"#.##..####.#",
"#.########.#",
"#.########.#",
"#.########.#",
"##.######.##",
"###......###",
"############" }; vector <string> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 5; verify_case(1, Arg1, radius(Arg0)); }
void test_case_2() { string Arr0[] = { ".........." }; vector <string> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 0; verify_case(2, Arg1, radius(Arg0)); }
void test_case_3() { string Arr0[] = { "#######",
"#######",
"#######",
"#######",
"#######" }; vector <string> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 0; verify_case(3, Arg1, radius(Arg0)); }
void test_case_4() { string Arr0[] = { "#####.......",
"#####.......",
"#####.......",
"............",
"............",
"............",
"............",
"............",
"............",
"............" }; vector <string> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 4; verify_case(4, Arg1, radius(Arg0)); }
void test_case_5() { string Arr0[] = { "#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.",
"...#...#...#...#...#...#...#...#...#...#...#...#..",
"#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.",
".#...#...#...#...#...#...#...#...#...#...#...#...#",
"#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.",
"...#...#...#...#...#...#...#...#...#...#...#...#..",
"#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.",
".#...#...#...#...#...#...#...#...#...#...#...#...#",
"#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.",
"...#...#...#...#...#...#...#...#...#...#...#...#.#",
"#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#.#." }
; vector <string> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 0; verify_case(5, Arg1, radius(Arg0)); }
void test_case_6() { string Arr0[] = { ".........................#........................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
"..................................................",
".................................................." }
; vector <string> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 24; verify_case(6, Arg1, radius(Arg0)); }
// END CUT HERE
};
// BEGIN CUT HERE
int main()
{
LargestCircle ___test;
___test.run_test(-1);
}
// END CUT HERE