Submission #598759

#	Time	Username	Problem	Language	Result	Execution time	Memory
598759		nguyen31hoang08minh2003	Zoo (COCI19_zoo)	C++14	0 / 110	1 ms	332 KiB

zoo

#include <iostream>
#include <fstream>
#include <sstream>
#include <cstdio>
#include <cstring>
#include <cstdlib>
#include <cctype>
#include <cmath>
#include <math.h>
#include <string.h>
#include <string>
#include <queue>
#include <stack>
#include <vector>
#include <deque>
#include <set>
#include <bitset>
#include <iterator>
#include <functional>
#include <algorithm>
#include <cassert>
#include <iomanip>
#include <limits>
#include <climits>
#include <map>
#include <ctime>
#define fore(i, a, b) for(ll i = (a), _b = (b); i < (_b); i++)
#define fort(i, a, b) for(ll i = (a), _b = (b); i <= (_b); i++)
#define ford(i, a, b) for(ll i = (a), _b = (b); i >= (_b); i--)
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()
#define sz(x) (int)(x).size()
#define pb push_back
#define pf push_front
#define fi first
#define se second
using namespace std;

template<class T> bool mini(T &a, T b){return a > b ? (a = b, 1) : 0; }
template<class T> bool maxi(T &a, T b){return a < b ? (a = b, 1) : 0; }

typedef unsigned long long ull;
typedef long long ll;
typedef long double ld;
typedef vector<ll> vi;
typedef pair<ll,ll> ii;
typedef vector<ii> vii;
typedef vector<vi> vvi;
typedef vector<vii> vvii;

const ll maxN = 1e3 + 5;
const ll maxM = 1e3 + 5;

ll n,m;
char c[maxN][maxM];
map<char,ll> cnt,cnt1;
char curC;
ull res;
int t[4][2] = {
    {0,1},
    {1,0},
    {-1,0},
    {0,-1}
};
bool flag;
queue<ii> q[2];

void spread(const ll x,
            const ll y){
    c[x][y] = '^';
    cnt[curC]--;
    ll u,v;
    fore(k,0,4){
        u = x + t[k][0];
        v = y + t[k][1];
        if(u < 1 || v < 1 || u > n || v > m || c[u][v] == '*' || c[u][v] == '^')
            continue;
        if(c[u][v] == curC)
            spread(u,v);
        else
            q[!flag].push(ii(u,v));
    }
}

void drawZoo(){
    fort(i,1,n){
        fort(j,1,m)
            cerr << c[i][j];
        cerr << "\n";
    }
    cerr << "\n";
}

int main(){
    #ifdef LOCAL
        freopen("input.INP","r",stdin);
//        freopen("output.OUT","w",stdout);
    #endif // LOCAL
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin >> n >> m;
    fort(i,1,n){
        cin >> c[i] + 1;
        fort(j,1,m)
            if(c[i][j] != '*')
                cnt[c[i][j]]++;
    }
    curC = c[n][m];
    q[0].push(ii(n,m));
    while(cnt['B'] > 0 || cnt['T'] > 0){
        for(;!q[flag].empty();q[flag].pop()){
            spread(q[flag].front().fi,
                   q[flag].front().se);
        }
        flag ^= 1;
        if(curC == 'T')
            curC = 'B';
        else
            curC = 'T';
        res++;
    }
    cout << res << '\n';
    return 0;
}

Compilation message (stderr)

zoo.cpp: In function 'int main()':
zoo.cpp:104:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  104 |         cin >> c[i] + 1;
      |                ~~~~~^~~

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