oj.uz

Submission #928400

# Submission time Handle Problem Language Result Execution time Memory
928400 2024-02-16T10:13:29 Z Whisper Zoo (COCI19_zoo) C++17
110 / 110
 40 ms 3420 KB 
#include "bits/stdc++.h"
#pragma GCC optimize("Ofast")

#define ii pair< int , int >
#define pb push_back
#define fi first
#define se second

#define all(x) begin(x) , end(x)
#define full(x) x + 1 , x + n + 1

#define MASK(i) 1LL << i 
#define bit(x, i) ( (x) & MASK(i) )
#define popcount(i) __builtin_popcountll(i)
#define set_on(x, i) ( (x) | MASK(i) )
#define set_off( x, i ) ( (x) & ~MASK(i) )
 
using namespace std; 
using ll = long long;
using str = string;

constexpr ll P[4] = {'U', 'L', 'R', 'D'};
constexpr ll dx[8] = {-1, -1, 1, 1, 0, 0, -1, 1};
constexpr ll dy[8] = {-1, 1, -1, 1, -1, 1, 0, 0};

constexpr ll L = 1e3 + 5;
constexpr ll LINF = ( 1e18 + 5 );
constexpr ll N = 1e6 + 5;
constexpr ll inf = ( 1e9 + 5 );
constexpr int MOD = 1e9 + 7;

template<class X  , class Y>
    bool maximize( X& x , const Y& y ){
        if ( x < y ){
            x = y;
            return true;
        }
        return false;
    }
template<class X , class Y>
    bool minimize( X& x , const Y& y ){
        if ( x > y ){
            x = y;
            return true;
        }
        return false;
    }
template<class T> using MaxHeap = priority_queue< T , vector<T> , less<T> >;
template<class T> using MinHeap = priority_queue< T , vector<T> , greater<T> >;

queue<ii> meet, Q;
bool vst[L][L];
ll res = 0;
char a[L][L];
ll n, m;
bool isOk( ll x , ll y ){
    return x >= 1 && x <= n  && y >= 1 && y <= m && !vst[x][y] && a[x][y] != '*';
}
void bfs(){
    res++;
    auto [ X , Y ] = Q.front();
    while ( !Q.empty() ){
       auto[ x, y ] = Q.front(); Q.pop();
        for ( int i = 4 ; i < 8 ; i++ ){
            ll nx = dx[i] + x;
            ll ny = dy[i] + y;
            if ( isOk( nx, ny ) ){
                if ( a[nx][ny] == a[X][Y] ) Q.emplace( nx , ny );
                else meet.emplace( nx , ny );
                vst[nx][ny] = true;
            }
        }
    }
    swap( meet, Q );
}
void Whisper(){
    cin >> n >> m;
    for ( int i = 1 ; i <= n ; i++ ){
        for ( int j = 1 ; j <= m ; j++ ){
            cin >> a[i][j];
        }
    }
    vst[1][1] = true;
    Q.emplace( 1, 1 );
    while ( !Q.empty() )
            bfs();
    cout << res;
}

signed main(){
    cin.tie(nullptr)->sync_with_stdio(false); cout.tie(nullptr);
    #define TASK "__Whisper"
//    freopen(TASK".inp","r",stdin);
//    freopen(TASK".out","w",stdout);
    ll Test = 1; //cin >> Test;
    for ( int i = 1 ; i <= Test ; i++ ){

        Whisper();
        //
        cout << '\n';
    }
}

Subtask #1
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 356 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 1 ms 600 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 600 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 604 KB Output is correct

Subtask #2
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 356 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 1 ms 600 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 600 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 604 KB Output is correct
16 Correct 12 ms 3376 KB Output is correct
17 Correct 12 ms 3164 KB Output is correct
18 Correct 12 ms 3420 KB Output is correct
19 Correct 13 ms 3164 KB Output is correct
20 Correct 12 ms 3164 KB Output is correct
21 Correct 36 ms 3172 KB Output is correct
22 Correct 36 ms 3160 KB Output is correct
23 Correct 35 ms 3164 KB Output is correct
24 Correct 37 ms 3160 KB Output is correct
25 Correct 36 ms 3164 KB Output is correct
26 Correct 40 ms 3280 KB Output is correct
27 Correct 37 ms 3416 KB Output is correct
28 Correct 35 ms 3160 KB Output is correct
29 Correct 37 ms 3388 KB Output is correct
30 Correct 38 ms 3316 KB Output is correct