oj.uz

Submission #445101

# Submission time Handle Problem Language Result Execution time Memory
445101 2021-07-16T12:37:08 Z Tahmid690 Zoo (COCI19_zoo) C++14
110 / 110
 46 ms 10220 KB 
// "Say:He is the Most Merciful,We have believed in him and upon him we have relied" [67:29]
 
//#pragma GCC optimize ("Ofast")
//#pragma GCC target ("avx2")
//#pragma GCC optimize("unroll-loops")
 
#include<bits/stdc++.h>
using namespace std;
                                                     
/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
template<typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
 */
 
typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> pll;
typedef pair<int,int> pii;
typedef vector<ll> vll;
typedef vector<int> vii;
typedef map<int,int> mpi;
typedef map<ll,ll> mpl;
typedef unordered_map<int,int> umpi;
typedef unordered_map<ll,ll> umpl;
 
#define ump unordered_map
#define mod 1000000007
#define inf 1000000000000000006
#define infi 1000000009
#define ff first
#define ss second
#define pb push_back
#define all(v) v.begin(), v.end()
#define fastio ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define endl '\n'
#define pi acos(-1.0)
#define dec(n) fixed << setprecision(n)
#define N 200005
//#define int long long



int n,m,cc,d[1005][1005],mx,vis[1005][1005];
string s[1005];
int fx[]={+1,-1,0,0};
int fy[]={0,0,-1,+1};
bool isval(int x,int y){
	if(x>=0 && x<n && y>=0 && y<m) return 1;
	return 0;
}
void bfs(int sx,int sy){
	d[sx][sy]=1;
	vis[sx][sy]=1;
	deque<pii> q;
	q.pb({sx,sy});
	while(!q.empty()){
		int xx=q.front().ff,yy=q.front().ss;
		q.pop_front();
		for(int i=0;i<4;i++){
			int x=xx+fx[i],y=yy+fy[i];
			if(isval(x,y)==0 || vis[x][y]==1) continue;
			vis[x][y]=1;
			if(s[x][y]==s[xx][yy]){
				d[x][y]=d[xx][yy];
				mx=max(mx,d[x][y]);
				q.push_front({x,y});
			}
			else if(s[x][y]!='*'){
				d[x][y]=d[xx][yy]+1;
				mx=max(mx,d[x][y]);
				q.push_back({x,y});
			}
		}
	}
}
void solve(){
	cin >> n >> m;
	for(int i=0;i<n;i++) cin >> s[i];
	bfs(0,0);
	cout << mx << endl;
}

signed main(){
    fastio;
    //srand(chrono::steady_clock::now().time_since_epoch().count());
    int T=1,cs=0;
    //cin >> T;
    while(T--){
        //cout << "Case " << ++cs << ":" << " " ; 
    	solve();
    } 
}

Compilation message

zoo.cpp: In function 'int main()':
zoo.cpp:89:13: warning: unused variable 'cs' [-Wunused-variable]
   89 |     int T=1,cs=0;
      |             ^~

Subtask #1
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 460 KB Output is correct
4 Correct 1 ms 716 KB Output is correct
5 Correct 1 ms 1132 KB Output is correct
6 Correct 1 ms 1132 KB Output is correct
7 Correct 1 ms 1100 KB Output is correct
8 Correct 1 ms 1100 KB Output is correct
9 Correct 1 ms 972 KB Output is correct
10 Correct 1 ms 1136 KB Output is correct
11 Correct 1 ms 1100 KB Output is correct
12 Correct 1 ms 1100 KB Output is correct
13 Correct 1 ms 872 KB Output is correct
14 Correct 2 ms 1100 KB Output is correct
15 Correct 1 ms 972 KB Output is correct

Subtask #2
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 460 KB Output is correct
4 Correct 1 ms 716 KB Output is correct
5 Correct 1 ms 1132 KB Output is correct
6 Correct 1 ms 1132 KB Output is correct
7 Correct 1 ms 1100 KB Output is correct
8 Correct 1 ms 1100 KB Output is correct
9 Correct 1 ms 972 KB Output is correct
10 Correct 1 ms 1136 KB Output is correct
11 Correct 1 ms 1100 KB Output is correct
12 Correct 1 ms 1100 KB Output is correct
13 Correct 1 ms 872 KB Output is correct
14 Correct 2 ms 1100 KB Output is correct
15 Correct 1 ms 972 KB Output is correct
16 Correct 13 ms 10120 KB Output is correct
17 Correct 10 ms 9932 KB Output is correct
18 Correct 11 ms 10220 KB Output is correct
19 Correct 12 ms 10096 KB Output is correct
20 Correct 10 ms 9988 KB Output is correct
21 Correct 43 ms 9676 KB Output is correct
22 Correct 40 ms 9676 KB Output is correct
23 Correct 43 ms 9804 KB Output is correct
24 Correct 46 ms 10188 KB Output is correct
25 Correct 41 ms 10060 KB Output is correct
26 Correct 40 ms 9796 KB Output is correct
27 Correct 44 ms 9812 KB Output is correct
28 Correct 40 ms 9676 KB Output is correct
29 Correct 45 ms 10188 KB Output is correct
30 Correct 42 ms 9932 KB Output is correct