oj.uz

Submission #206608

# Submission time Handle Problem Language Result Execution time Memory
206608 2020-03-04T08:37:03 Z stefdasca Zoo (COCI19_zoo) C++14
110 / 110
 53 ms 3448 KB 
#include<bits/stdc++.h>
#pragma GCC optimize("O3")
#define fi first
#define se second
#define pb push_back
#define pf push_front
#define mod 1000000007

using namespace std;

typedef long long ll;


int add(int a, int b)
{
    ll x = a+b;
    if(x >= mod)
        x -= mod;
    if(x < 0)
        x += mod;
    return x;
}
ll mul(ll a, ll b)
{
    return (a*b) % mod;
}

ll pw(ll a, ll b)
{
    ll ans = 1;
    while(b)
    {
        if(b & 1)
            ans = (ans * a) % mod;
        a = (a * a) % mod;
        b >>= 1;
    }
    return ans;
}

int n, m;
char c[1002][1002];
bool blocked[1002][1002];
int ans = 0;
int ox[] = {-1, 0, 1, 0};
int oy[] = {0, 1, 0, -1};
bool verif(int L, int C)
{
    return (L >= 1 && L <= n && C >= 1 && C <= m);
}
void lee(int L, int C)
{
    char init = c[L][C];
    c[L][C] = 'F';
    deque<pair<int, int> >d, d2;
    d.pb({L, C});
    while(!d.empty() || !d2.empty())
    {
        ++ans;
        while(!d.empty())
        {
            pair<int, int> poz = d[0];
            d.pop_front();
            for(int i = 0; i <= 3; ++i)
            {
                int X = poz.fi + ox[i];
                int Y = poz.se + oy[i];
                if(!verif(X, Y))
                    continue;
                if(c[X][Y] == 'F' || c[X][Y] == '*')
                    continue;
                if(blocked[X][Y])
                    continue;
                if(c[X][Y] == init)
                {
                    d.push_back({X, Y});
                    blocked[X][Y] = 1;
                }
                else
                {
                    d2.push_back({X, Y});
                    blocked[X][Y] = 1;
                }
            }
        }
        if(init == 'B')
            init = 'T';
        else
            init = 'B';
        swap(d, d2);
        for(int i = 0; i < d.size(); ++i)
        {
            pair<int, int> poz = d[0];
            c[poz.fi][poz.se] = 'F';
            blocked[poz.fi][poz.se] = 0;
        }
    }
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> n >> m;
    for(int i = 1; i <= n; ++i)
        cin >> (c[i] + 1);
    lee(n, m);
    cout << ans;
    return 0;
}

Compilation message

zoo.cpp: In function 'void lee(int, int)':
zoo.cpp:91:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i = 0; i < d.size(); ++i)
                        ~~^~~~~~~~~~

Subtask #1
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 6 ms 504 KB Output is correct
7 Correct 5 ms 504 KB Output is correct
8 Correct 6 ms 504 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 6 ms 504 KB Output is correct
11 Correct 5 ms 504 KB Output is correct
12 Correct 5 ms 632 KB Output is correct
13 Correct 5 ms 504 KB Output is correct
14 Correct 5 ms 504 KB Output is correct
15 Correct 5 ms 504 KB Output is correct

Subtask #2
65.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 6 ms 504 KB Output is correct
7 Correct 5 ms 504 KB Output is correct
8 Correct 6 ms 504 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 6 ms 504 KB Output is correct
11 Correct 5 ms 504 KB Output is correct
12 Correct 5 ms 632 KB Output is correct
13 Correct 5 ms 504 KB Output is correct
14 Correct 5 ms 504 KB Output is correct
15 Correct 5 ms 504 KB Output is correct
16 Correct 11 ms 3320 KB Output is correct
17 Correct 11 ms 3192 KB Output is correct
18 Correct 11 ms 3320 KB Output is correct
19 Correct 12 ms 3320 KB Output is correct
20 Correct 12 ms 3320 KB Output is correct
21 Correct 43 ms 3116 KB Output is correct
22 Correct 44 ms 3068 KB Output is correct
23 Correct 44 ms 3192 KB Output is correct
24 Correct 53 ms 3320 KB Output is correct
25 Correct 44 ms 3320 KB Output is correct
26 Correct 45 ms 3320 KB Output is correct
27 Correct 43 ms 3192 KB Output is correct
28 Correct 46 ms 3192 KB Output is correct
29 Correct 47 ms 3448 KB Output is correct
30 Correct 45 ms 3192 KB Output is correct