oj.uz

Submission #31343

# Submission time Handle Problem Language Result Execution time Memory
31343 2017-08-19T02:11:18 Z imaxblue Tracks in the Snow (BOI13_tracks) C++14
89.0625 / 100
 2000 ms 88104 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define mp make_pair
#define pb push_back
#define x first
#define y second
#define pii pair<int, int>
#define p3i pair<pii, int>
#define pll pair<ll, ll>
#define p3l pair<pll, ll>
#define lseg L, (L+R)/2, N*2+1
#define rseg (L+R)/2+1, R, N*2+2
#define ub upper_bound
#define lb lower_bound
#define pq priority_queue
#define MN 1000000007
#define fox(k, x) for (int k=0; k<x; ++k)
#define fox1(k, x) for (int k=1; k<=x; ++k)
#define foxr(k, x) for (int k=x-1; k>=0; --k)
#define fox1r(k, x) for (int k=x; k>0; --k)
#define ms multiset
#define flood(x) memset(x, 0x3f3f3f3f, sizeof x)
#define drain(x) memset(x, 0, sizeof x)

int n, m, X, Y, ans;
char g[4005][4005];
bool u[4005][4005];
queue<pii> q[2];
void bfs(){
    bool k;
    q[0].push(mp(1, 1));
    for (ans=0; !q[0].empty(); ans+=k){
        k=0;
        //cout << "*";
        while(!q[0].empty()){
            X=q[0].front().x; Y=q[0].front().y; q[0].pop();
            if (X<1 || Y<1 || X>n || Y>m) continue;
            if (u[X][Y] || g[X][Y]=='.') continue;
            u[X][Y]=1;
            k=1;
            q[g[X+1][Y]!=g[X][Y]].push(mp(X+1, Y));
            q[g[X-1][Y]!=g[X][Y]].push(mp(X-1, Y));
            q[g[X][Y+1]!=g[X][Y]].push(mp(X, Y+1));
            q[g[X][Y-1]!=g[X][Y]].push(mp(X, Y-1));
        }
        q[0]=q[1];
        while(!q[1].empty()) q[1].pop();
    }
}
int main(){
    cin.sync_with_stdio(0);
    cin.tie(0);
    cin >> n >> m;
    fox1(l, n){
        fox1(l2, m){
            cin >> g[l][l2];
        }
    }
    bfs();
    cout << ans << endl;
    return 0;
}

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 33924 KB Output is correct
2 Correct 0 ms 33516 KB Output is correct
3 Correct 0 ms 33516 KB Output is correct
4 Correct 13 ms 34156 KB Output is correct
5 Correct 3 ms 33516 KB Output is correct
6 Correct 0 ms 33516 KB Output is correct
7 Correct 0 ms 33516 KB Output is correct
8 Correct 0 ms 33516 KB Output is correct
9 Correct 0 ms 33516 KB Output is correct
10 Correct 3 ms 33516 KB Output is correct
11 Correct 3 ms 33648 KB Output is correct
12 Correct 9 ms 33776 KB Output is correct
13 Correct 3 ms 33516 KB Output is correct
14 Correct 3 ms 33516 KB Output is correct
15 Correct 19 ms 33648 KB Output is correct
16 Correct 26 ms 33924 KB Output is correct
17 Correct 16 ms 33648 KB Output is correct
18 Correct 9 ms 34156 KB Output is correct

Subtask #2
59.0625 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 33648 KB Output is correct
2 Correct 116 ms 33648 KB Output is correct
3 Correct 599 ms 33780 KB Output is correct
4 Correct 146 ms 33648 KB Output is correct
5 Correct 523 ms 33648 KB Output is correct
6 Execution timed out 2000 ms 88104 KB Execution timed out
7 Correct 0 ms 33648 KB Output is correct
8 Correct 3 ms 33648 KB Output is correct
9 Correct 3 ms 33648 KB Output is correct
10 Correct 0 ms 33648 KB Output is correct
11 Correct 3 ms 33648 KB Output is correct
12 Correct 3 ms 33516 KB Output is correct
13 Correct 109 ms 33648 KB Output is correct
14 Correct 49 ms 33648 KB Output is correct
15 Correct 59 ms 33516 KB Output is correct
16 Correct 46 ms 33648 KB Output is correct
17 Correct 313 ms 33780 KB Output is correct
18 Correct 196 ms 33648 KB Output is correct
19 Correct 146 ms 33648 KB Output is correct
20 Correct 149 ms 33648 KB Output is correct
21 Correct 346 ms 33648 KB Output is correct
22 Correct 506 ms 33648 KB Output is correct
23 Correct 646 ms 33844 KB Output is correct
24 Correct 433 ms 33648 KB Output is correct
25 Correct 963 ms 33780 KB Output is correct
26 Correct 1339 ms 33776 KB Output is correct
27 Execution timed out 2000 ms 41064 KB Execution timed out
28 Execution timed out 2000 ms 88104 KB Execution timed out
29 Execution timed out 2000 ms 80180 KB Execution timed out
30 Correct 1833 ms 78928 KB Output is correct
31 Execution timed out 2000 ms 36888 KB Execution timed out
32 Correct 1386 ms 38532 KB Output is correct