oj.uz

Submission #42409

# Submission time Handle Problem Language Result Execution time Memory
42409 2018-02-26T18:14:39 Z Hassoony Tracks in the Snow (BOI13_tracks) C++14
15.4167 / 100
 2000 ms 280540 KB 
#include<bits/stdc++.h>
#include<unordered_map>
#define F first
#define S second
using namespace std;
typedef long long ll;
typedef long double D;
const ll inf=(1ll<<61);
const ll mod=1e9+7;
const int MX=4002;
int n,m,ans;
bool vis[MX][MX];
char a[MX][MX],c;
int dx[]={0,0,-1,1};
int dy[]={1,-1,0,0};
int main(){
    scanf("%d%d",&n,&m);
    for(int i=0;i<n;i++)scanf("%s",&a[i]);
    queue<pair<int,int> >q[2];
    int node=0;
    q[node].push({0,0});
    while(!q[node].empty()){
        while(!q[node].empty()){
            int x=q[node].front().first,y=q[node].front().second;q[node].pop();
            if(vis[x][y])continue;
            vis[x][y]=1;
            for(int i=0;i<4;i++){
                int nx=dx[i]+x,ny=dy[i]+y;
                if(nx>=n||ny>=m||nx<0||ny<0)continue;
                if(a[nx][ny]==a[x][y])q[node].push({nx,ny});
                else q[node^1].push({nx,ny});
            }
        }
        node^=1;
        ans++;
    }
    cout<<ans-1<<endl;
}

Compilation message

tracks.cpp: In function 'int main()':
tracks.cpp:18:41: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'char (*)[4002]' [-Wformat=]
     for(int i=0;i<n;i++)scanf("%s",&a[i]);
                                         ^
tracks.cpp:17:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&m);
                        ^
tracks.cpp:18:42: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(int i=0;i<n;i++)scanf("%s",&a[i]);
                                          ^

Subtask #1
6.66666666667 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 27 ms 4472 KB Output isn't correct
2 Incorrect 2 ms 4472 KB Output isn't correct
3 Incorrect 2 ms 4472 KB Output isn't correct
4 Correct 16 ms 5080 KB Output is correct
5 Incorrect 11 ms 5080 KB Output isn't correct
6 Incorrect 1 ms 5080 KB Output isn't correct
7 Incorrect 2 ms 5080 KB Output isn't correct
8 Correct 2 ms 5080 KB Output is correct
9 Incorrect 3 ms 5080 KB Output isn't correct
10 Incorrect 10 ms 5080 KB Output isn't correct
11 Correct 5 ms 5080 KB Output is correct
12 Incorrect 11 ms 5080 KB Output isn't correct
13 Incorrect 9 ms 5080 KB Output isn't correct
14 Incorrect 9 ms 5080 KB Output isn't correct
15 Incorrect 26 ms 7324 KB Output isn't correct
16 Incorrect 28 ms 7324 KB Output isn't correct
17 Incorrect 25 ms 7324 KB Output isn't correct
18 Correct 16 ms 7324 KB Output is correct

Subtask #2
8.75 / 70.0

# Verdict Execution time Memory Grader output
1 Incorrect 30 ms 32384 KB Output isn't correct
2 Incorrect 159 ms 32384 KB Output isn't correct
3 Incorrect 1624 ms 163508 KB Output isn't correct
4 Incorrect 365 ms 163508 KB Output isn't correct
5 Incorrect 1049 ms 204092 KB Output isn't correct
6 Correct 1918 ms 204092 KB Output is correct
7 Incorrect 32 ms 204092 KB Output isn't correct
8 Incorrect 30 ms 204092 KB Output isn't correct
9 Incorrect 6 ms 204092 KB Output isn't correct
10 Incorrect 3 ms 204092 KB Output isn't correct
11 Incorrect 29 ms 204092 KB Output isn't correct
12 Incorrect 4 ms 204092 KB Output isn't correct
13 Incorrect 149 ms 204092 KB Output isn't correct
14 Incorrect 85 ms 204092 KB Output isn't correct
15 Incorrect 84 ms 204092 KB Output isn't correct
16 Incorrect 60 ms 204092 KB Output isn't correct
17 Incorrect 456 ms 204092 KB Output isn't correct
18 Incorrect 331 ms 204092 KB Output isn't correct
19 Incorrect 325 ms 204092 KB Output isn't correct
20 Incorrect 333 ms 204092 KB Output isn't correct
21 Incorrect 949 ms 204092 KB Output isn't correct
22 Incorrect 1083 ms 256836 KB Output isn't correct
23 Incorrect 871 ms 256836 KB Output isn't correct
24 Incorrect 1202 ms 256836 KB Output isn't correct
25 Incorrect 1423 ms 280540 KB Output isn't correct
26 Incorrect 919 ms 280540 KB Output isn't correct
27 Correct 1289 ms 280540 KB Output is correct
28 Correct 1961 ms 280540 KB Output is correct
29 Execution timed out 2041 ms 280540 KB Time limit exceeded
30 Correct 1704 ms 280540 KB Output is correct
31 Incorrect 1446 ms 280540 KB Output isn't correct
32 Incorrect 1292 ms 280540 KB Output isn't correct