oj.uz

Submission #44864

# Submission time Handle Problem Language Result Execution time Memory
44864 2018-04-08T19:41:22 Z iletavcioski Tracks in the Snow (BOI13_tracks) C++17
22.5 / 100
 2000 ms 1048576 KB 
#include <iostream>
#include <queue>
using namespace std;
struct node 
{
    int x;
    int y;
};
int n,m;
char mat[4004][4004];
bool vis[4004][4004];
int dx[4]={0,0,1,-1};
int dy[4]={1,-1,0,0};
int brojac;
void bfs(queue<node> q1,queue<node> q2,int broj)
{
    if(q1.empty())
        return;
    brojac=broj;
    while(!q1.empty())
    {
        node g=q1.front();
        q1.pop();
        vis[g.x][g.y]=true;
        for(int i=0;i<4;i++)
        {
            if(g.x+dx[i]<n&&g.x+dx[i]>=0&&g.y+dy[i]<m&&g.y+dy[i]>=0)
            {
                if(!vis[g.x+dx[i]][g.y+dy[i]]&&mat[g.x+dx[i]][g.y+dy[i]]!='.')
                {
                    if(mat[g.x+dx[i]][g.y+dy[i]]!=mat[g.x][g.y])
                    {
                        node g1;
                        g1.x=g.x+dx[i];
                        g1.y=g.y+dy[i];
                        q2.push(g1);
                    }
                    else
                    {
                        node g1;
                        g1.x=g.x+dx[i];
                        g1.y=g.y+dy[i];
                        q1.push(g1);
                    }
                }
            }
        }
    }
    bfs(q2,q1,broj+1);
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie();
    cout.tie();
    cin>>n>>m;
    for(int i=0;i<n;i++)
    {
        for(int j=0;j<m;j++)
            cin>>mat[i][j];
    }
    queue<node> q1,q2;
    node g;
    g.x=0;
    g.y=0;
    q1.push(g);
    bfs(q1,q2,1);
    cout<<brojac<<endl;
    return 0;
}

Subtask #1
5.0 / 30.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2106 ms 655692 KB Time limit exceeded
2 Correct 2 ms 655692 KB Output is correct
3 Execution timed out 2070 ms 655692 KB Time limit exceeded
4 Execution timed out 2100 ms 655692 KB Time limit exceeded
5 Execution timed out 2106 ms 655692 KB Time limit exceeded
6 Correct 2 ms 655692 KB Output is correct
7 Execution timed out 2084 ms 655692 KB Time limit exceeded
8 Execution timed out 2108 ms 659840 KB Time limit exceeded
9 Correct 59 ms 659840 KB Output is correct
10 Execution timed out 2095 ms 659840 KB Time limit exceeded
11 Execution timed out 2095 ms 659840 KB Time limit exceeded
12 Execution timed out 2093 ms 659840 KB Time limit exceeded
13 Execution timed out 2090 ms 659840 KB Time limit exceeded
14 Execution timed out 2099 ms 659840 KB Time limit exceeded
15 Execution timed out 2110 ms 659840 KB Time limit exceeded
16 Execution timed out 2106 ms 671784 KB Time limit exceeded
17 Execution timed out 2089 ms 671784 KB Time limit exceeded
18 Execution timed out 2116 ms 671784 KB Time limit exceeded

Subtask #2
17.5 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 671784 KB Output is correct
2 Execution timed out 2094 ms 671784 KB Time limit exceeded
3 Execution timed out 2097 ms 671784 KB Time limit exceeded
4 Execution timed out 2100 ms 671784 KB Time limit exceeded
5 Execution timed out 2103 ms 1048576 KB Time limit exceeded
6 Execution timed out 2082 ms 1048576 KB Time limit exceeded
7 Correct 35 ms 1048576 KB Output is correct
8 Correct 38 ms 1048576 KB Output is correct
9 Execution timed out 2106 ms 1048576 KB Time limit exceeded
10 Correct 8 ms 1048576 KB Output is correct
11 Correct 30 ms 1048576 KB Output is correct
12 Correct 18 ms 1048576 KB Output is correct
13 Execution timed out 2084 ms 1048576 KB Time limit exceeded
14 Execution timed out 2096 ms 1048576 KB Time limit exceeded
15 Correct 273 ms 1048576 KB Output is correct
16 Execution timed out 2091 ms 1048576 KB Time limit exceeded
17 Execution timed out 2088 ms 1048576 KB Time limit exceeded
18 Correct 944 ms 1048576 KB Output is correct
19 Execution timed out 2088 ms 1048576 KB Time limit exceeded
20 Execution timed out 2100 ms 1048576 KB Time limit exceeded
21 Execution timed out 2099 ms 1048576 KB Time limit exceeded
22 Execution timed out 2153 ms 1048576 KB Time limit exceeded
23 Execution timed out 2068 ms 1048576 KB Time limit exceeded
24 Execution timed out 2157 ms 1048576 KB Time limit exceeded
25 Execution timed out 2152 ms 1048576 KB Time limit exceeded
26 Execution timed out 2071 ms 1048576 KB Time limit exceeded
27 Execution timed out 2095 ms 1048576 KB Time limit exceeded
28 Execution timed out 2097 ms 1048576 KB Time limit exceeded
29 Execution timed out 2072 ms 1048576 KB Time limit exceeded
30 Execution timed out 2083 ms 1048576 KB Time limit exceeded
31 Execution timed out 2084 ms 1048576 KB Time limit exceeded
32 Execution timed out 2082 ms 1048576 KB Time limit exceeded