This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#warning Check Integer OverFlow
#define ll long long
#define FOR(i,a,b) for(int i=a;i<b;i++)
#define FORd(i,a,b) for(int i=a;i>=b;i--)
#define trav(a,b) for(auto a:b)
#define sz(a) a.size()
#define maxs(a,b) if(b>a)a=b
#define mins(a,b) if(b<a)a=b
#ifdef LOCAL
#define dbg(x) cerr<<"["<<#x<<":"<<x<<"] "
#define dbg2(a,b) dbg(a);dbg(b)
#define dbg3(a,b,c) dbg2(a,b);dbg(c)
#define dln cerr << ln
#else
#define dbg(x) 0
#define dbg2(a,b) 0
#define dbg3(a,b,c) 0
#define dln 0
#endif
#define gcd(a,b) __gcd(a,b)
#define lcm(a,b) (((a)/(__gcd(a,b))) * b)
#define print(arr) for(auto it = arr.begin();it < arr.end();it ++){cout << *it << " ";}cout << ln;
#define all(a) (a).begin(), (a).end()
#define vi vector<int>
#define v vector
#define p pair
#define pii p<int,int>
#define pb push_back
#define mk make_pair
#define f first
#define s second
#define ln "\n"
typedef long double ld;
using namespace std;
using namespace __gnu_pbds;
ll modF=1e9+7;
template<class T> using iset = tree<
T,
null_type,
less<T>,
rb_tree_tag,
tree_order_statistics_node_update>;
/*INPUT
1 0
1000
1
1000
3 2
1 2 3
1 2
1 3
3
2
3
5
14 13
2 3 4 19 20 21 5 22 6 7 23 8 10 14
1 2
1 3
1 4
2 5
2 6
3 7
3 8
3 9
4 10
8 11
10 13
10 12
12 14
3
45
44
23
*/
#define maxn 1000
int N, M, vis[maxn][maxn];
char m, a[maxn][maxn];
int dx[4] = {1,-1,0,0};
int dy[4] = {0,0,1,-1};
void ff(int i,int j)
{
if(i >= N or i < 0 or j >= M or j < 0)return;
if(vis[i][j])return;
if(a[i][j] != m)return;
vis[i][j] = 1;
FOR(k,0,4)ff(i + dx[k],j + dy[k]);
}
void solve(){
cin >> N >> M;
FOR(i,0,N)
{
FOR(j,0,M)
{
cin >> a[i][j];
}
}
m = a[0][0];
int cnt = 0;
bool pos = false;
FOR(i,0,N)
{
FOR(j,0,M)
{
if(a[i][j] != '*' and a[i][j] != m)pos = true;
if(vis[i][j] == 0 and a[i][j] == m)
{
cnt ++;
ff(i,j);
}
}
}
// if(cnt > 1)
// {
// cout << 3 << '\n';
// }
// else if(cnt == 1 and pos)
// {
// cout << 2 << '\n';
// }
// else
// {
// cout << 1 << '\n';
// }
cout << 3 << '\n';
}
int main(){
ios::sync_with_stdio(0);cin.tie(0);
int t = 1;
// cin >> t;
while(t --){
solve();
}
}
Compilation message (stderr)
zoo.cpp:4:2: warning: #warning Check Integer OverFlow [-Wcpp]
4 | #warning Check Integer OverFlow
| ^~~~~~~
zoo.cpp: In function 'void solve()':
zoo.cpp:113:7: warning: variable 'pos' set but not used [-Wunused-but-set-variable]
113 | bool pos = false;
| ^~~
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