oj.uz

Submission #42405

# Submission time Handle Problem Language Result Execution time Memory
42405 2018-02-26T17:22:35 Z Hassoony Tracks in the Snow (BOI13_tracks) C++14
25.5208 / 100
 2000 ms 807472 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,vis[MX][MX],cnt,h;
char a[MX][MX];
int dx[]={0,0,-1,1};
int dy[]={1,-1,0,0};
void dfs(int x,int y){
    if(vis[x][y])return;
    vis[x][y]=1;
    cnt++;
    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||a[nx][ny]!=a[x][y])continue;
        dfs(nx,ny);
    }
}
int main(){
    scanf("%d%d",&n,&m);
    for(int i=0;i<n;i++)scanf("%s",&a[i]);
    for(int i=0;i<n;i++){
        for(int j=0;j<m;j++){
            if(a[i][j]!='.')h++;
        }
    }
    int ans=0;
    while(cnt!=h){
        char c='R';
        if(a[0][0]=='R')c='F';
        cnt=0;
        dfs(0,0);
        ans++;
        for(int i=0;i<n;i++){
            for(int j=0;j<m;j++){
                if(vis[i][j])a[i][j]=c;
            }
        }
        memset(vis,0,sizeof(vis));
    }
    cout<<ans<<endl;
}

Compilation message

tracks.cpp: In function 'int main()':
tracks.cpp:27:41: 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:26:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&m);
                        ^
tracks.cpp:27:42: 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
23.3333333333 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 832 ms 70392 KB Output is correct
2 Execution timed out 2024 ms 70392 KB Time limit exceeded
3 Correct 520 ms 70392 KB Output is correct
4 Correct 131 ms 72432 KB Output is correct
5 Correct 1422 ms 72432 KB Output is correct
6 Execution timed out 2052 ms 72432 KB Time limit exceeded
7 Correct 502 ms 72432 KB Output is correct
8 Correct 116 ms 72432 KB Output is correct
9 Correct 718 ms 72432 KB Output is correct
10 Correct 1841 ms 72432 KB Output is correct
11 Correct 100 ms 72432 KB Output is correct
12 Correct 552 ms 72432 KB Output is correct
13 Correct 1416 ms 72432 KB Output is correct
14 Correct 1416 ms 72432 KB Output is correct
15 Execution timed out 2053 ms 72432 KB Time limit exceeded
16 Correct 839 ms 72432 KB Output is correct
17 Execution timed out 2050 ms 72432 KB Time limit exceeded
18 Correct 135 ms 72568 KB Output is correct

Subtask #2
2.1875 / 70.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2043 ms 78692 KB Time limit exceeded
2 Execution timed out 2057 ms 78692 KB Time limit exceeded
3 Execution timed out 2057 ms 79420 KB Time limit exceeded
4 Execution timed out 2041 ms 79420 KB Time limit exceeded
5 Execution timed out 2043 ms 79420 KB Time limit exceeded
6 Execution timed out 2081 ms 470992 KB Time limit exceeded
7 Execution timed out 2047 ms 470992 KB Time limit exceeded
8 Execution timed out 2051 ms 470992 KB Time limit exceeded
9 Execution timed out 2050 ms 470992 KB Time limit exceeded
10 Execution timed out 2040 ms 470992 KB Time limit exceeded
11 Execution timed out 2050 ms 470992 KB Time limit exceeded
12 Execution timed out 2052 ms 470992 KB Time limit exceeded
13 Execution timed out 2049 ms 470992 KB Time limit exceeded
14 Execution timed out 2032 ms 470992 KB Time limit exceeded
15 Execution timed out 2049 ms 470992 KB Time limit exceeded
16 Execution timed out 2029 ms 470992 KB Time limit exceeded
17 Execution timed out 2031 ms 470992 KB Time limit exceeded
18 Execution timed out 2015 ms 470992 KB Time limit exceeded
19 Execution timed out 2063 ms 470992 KB Time limit exceeded
20 Execution timed out 2059 ms 470992 KB Time limit exceeded
21 Execution timed out 2047 ms 470992 KB Time limit exceeded
22 Execution timed out 2035 ms 470992 KB Time limit exceeded
23 Execution timed out 2025 ms 470992 KB Time limit exceeded
24 Execution timed out 2033 ms 470992 KB Time limit exceeded
25 Execution timed out 2016 ms 470992 KB Time limit exceeded
26 Correct 881 ms 652520 KB Output is correct
27 Execution timed out 2082 ms 807472 KB Time limit exceeded
28 Execution timed out 2053 ms 807472 KB Time limit exceeded
29 Execution timed out 2071 ms 807472 KB Time limit exceeded
30 Execution timed out 2057 ms 807472 KB Time limit exceeded
31 Execution timed out 2017 ms 807472 KB Time limit exceeded
32 Execution timed out 2060 ms 807472 KB Time limit exceeded