Submission #1026631

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1026631	2024-07-18T08:46:46 Z	kkkkkkkk	Tracks in the Snow (BOI13_tracks)	C++14	82.5 / 100	2000 ms	105260 KB

tracks

#include <bits/stdc++.h>
 
using namespace std;
 
int dr[]={+1, 0, -1, 0};
int dc[]={0, +1, 0, -1};
 
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n, m;
    cin >> n >> m;
    char tracks[n][m];
    for (int i=0;i<n;i++)
        for (int j=0;j<m;j++)
            cin >> tracks[i][j];
    priority_queue<pair<int, pair<int,int> > > pq;
    pq.push({-1, {0,0}});
    int vis[n][m], rez=1;
    memset(vis, -1, sizeof(vis));
    while (!pq.empty()) {
        int r=pq.top().second.first, c=pq.top().second.second, dist=-pq.top().first;
        pq.pop();
        if (vis[r][c]!=-1) continue;
        vis[r][c]=dist;
        rez=max(rez, dist);
        for (int i=0;i<4;i++) {
            int nr=r+dr[i], nc=c+dc[i];
            if (nr>=0&&nc>=0&&nr<n&&nc<m&&tracks[nr][nc]!='.') {
                if (tracks[nr][nc]!=tracks[r][c]) pq.push({-(dist+1), {nr, nc}});
                else pq.push({-dist, {nr, nc}});
            }
        }
    }
    cout << rez;
 
    return 0;
}

Subtask #1

30.0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	123 ms	2076 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	1 ms	388 KB	Output is correct
4	Correct	70 ms	2072 KB	Output is correct
5	Correct	8 ms	860 KB	Output is correct
6	Correct	1 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	2 ms	348 KB	Output is correct
9	Correct	1 ms	464 KB	Output is correct
10	Correct	11 ms	604 KB	Output is correct
11	Correct	16 ms	856 KB	Output is correct
12	Correct	44 ms	1116 KB	Output is correct
13	Correct	7 ms	860 KB	Output is correct
14	Correct	7 ms	856 KB	Output is correct
15	Correct	108 ms	1920 KB	Output is correct
16	Correct	149 ms	2232 KB	Output is correct
17	Correct	40 ms	1628 KB	Output is correct
18	Correct	67 ms	1876 KB	Output is correct

Subtask #2

52.5 / 70.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	600 KB	Output is correct
2	Correct	272 ms	8248 KB	Output is correct
3	Correct	907 ms	79020 KB	Output is correct
4	Correct	243 ms	18940 KB	Output is correct
5	Correct	254 ms	44560 KB	Output is correct
6	Execution timed out	2029 ms	105260 KB	Time limit exceeded
7	Correct	3 ms	604 KB	Output is correct
8	Correct	3 ms	604 KB	Output is correct
9	Correct	14 ms	860 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	348 KB	Output is correct
13	Correct	259 ms	8252 KB	Output is correct
14	Correct	171 ms	4952 KB	Output is correct
15	Correct	23 ms	5208 KB	Output is correct
16	Correct	169 ms	3732 KB	Output is correct
17	Correct	709 ms	20536 KB	Output is correct
18	Correct	104 ms	20048 KB	Output is correct
19	Correct	239 ms	18928 KB	Output is correct
20	Correct	238 ms	17232 KB	Output is correct
21	Correct	559 ms	46160 KB	Output is correct
22	Correct	311 ms	44584 KB	Output is correct
23	Correct	1401 ms	38480 KB	Output is correct
24	Correct	254 ms	44884 KB	Output is correct
25	Correct	444 ms	78896 KB	Output is correct
26	Execution timed out	2037 ms	60496 KB	Time limit exceeded
27	Execution timed out	2031 ms	80312 KB	Time limit exceeded
28	Execution timed out	2083 ms	104204 KB	Time limit exceeded
29	Execution timed out	2035 ms	103700 KB	Time limit exceeded
30	Execution timed out	2053 ms	101896 KB	Time limit exceeded
31	Execution timed out	2050 ms	54108 KB	Time limit exceeded
32	Execution timed out	2048 ms	80228 KB	Time limit exceeded