Submission #445120

#	Time	Username	Problem	Language	Result	Execution time	Memory
445120		Abrar_Al_Samit	Zoo (COCI19_zoo)	C++17	0 / 110	1 ms	204 KiB

zoo

#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;


#define debug(x) cerr << '[' << (#x) << "] = " << x << '\n';

template<class T> using ordered_set = tree<T, null_type , less<T> , rb_tree_tag , tree_order_statistics_node_update> ;

void PlayGround() {
    int r, c; cin >> r >> c;
    vector<string>g(r);
    for(string& row : g) cin >> row;
    vector<vector<bool>>vis(r, vector<bool>(c, 0));
    int ans = 0, ans2 = 0;
    auto valid = [&] (int i, int j) {
        return i>-1 && i<r && j>-1 && j<c && vis[i][j]==false;
    };
    auto BFS = [&] (int x, int y) {
        int dx[] {1, -1, 0, 0};
        int dy[] {0, 0, 1, -1};
        queue<pair<int,int>>q;
        q.push(make_pair(x, y));
        while(!q.empty()) {
            int i = q.front().first, j = q.front().second;
            q.pop();
            if(vis[i][j]) continue;
            vis[i][j] = true;
            for(int k=0; k<4; ++k) {
                int newi = i + dx[k], newj = j + dy[k];
                if(valid(newi, newj) && g[newi][newj]==g[i][j])
                    q.push(make_pair(newi, newj));
            }
        }
    };
    char C = g[0][0];
    bool other = false;
    for(int i=0; i<r; ++i) {
        for(int j=0; j<c; ++j) if(!vis[i][j] && g[i][j]==C) {
            BFS(i, j);
            ++ans;
        } else other |= g[i][j]!=C;
    }
    ans += other;
    
    cout << ans << '\n';

    #ifndef ONLINE_JUDGE
        cerr << "Time elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n";
    #endif
} 
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    //#ifndef ONLINE_JUDGE
     //   freopen("input.txt", "r", stdin);
   // #endif
    PlayGround();

    return 0;
}

Compilation message (stderr)

zoo.cpp: In function 'void PlayGround()':
zoo.cpp:18:18: warning: unused variable 'ans2' [-Wunused-variable]
   18 |     int ans = 0, ans2 = 0;
      |                  ^~~~

• Subtask 1: 0 / 45
• Subtask 2: 0 / 65