oj.uz

Submission #42407

# Submission time Handle Problem Language Result Execution time Memory
42407 2018-02-26T17:28:55 Z Hassoony Tracks in the Snow (BOI13_tracks) C++14
34.375 / 100
 2000 ms 1003268 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,cnt,h;
bool vis[MX][MX];
char a[MX][MX],c;
int dx[]={0,0,-1,1};
int dy[]={1,-1,0,0};
vector<pair<int,int> >nodes;
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);
    }
    a[x][y]=c;
}
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){
        c='R';
        if(a[0][0]=='R')c='F';
        cnt=0;
        dfs(0,0);
        ans++;
        memset(vis,0,sizeof(vis));
    }
    cout<<ans<<endl;
}

Compilation message

tracks.cpp: In function 'int main()':
tracks.cpp:30:41: 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:29:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&m);
                        ^
tracks.cpp:30:42: 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
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 285 ms 25080 KB Output is correct
2 Correct 149 ms 25080 KB Output is correct
3 Correct 42 ms 25080 KB Output is correct
4 Correct 49 ms 27764 KB Output is correct
5 Correct 154 ms 27764 KB Output is correct
6 Correct 151 ms 27764 KB Output is correct
7 Correct 46 ms 27764 KB Output is correct
8 Correct 19 ms 27764 KB Output is correct
9 Correct 57 ms 27764 KB Output is correct
10 Correct 187 ms 27764 KB Output is correct
11 Correct 25 ms 27764 KB Output is correct
12 Correct 104 ms 27764 KB Output is correct
13 Correct 162 ms 27764 KB Output is correct
14 Correct 152 ms 27764 KB Output is correct
15 Correct 716 ms 27764 KB Output is correct
16 Correct 296 ms 27764 KB Output is correct
17 Correct 632 ms 27764 KB Output is correct
18 Correct 50 ms 27888 KB Output is correct

Subtask #2
4.375 / 70.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2031 ms 32008 KB Time limit exceeded
2 Execution timed out 2049 ms 37192 KB Time limit exceeded
3 Execution timed out 2055 ms 37192 KB Time limit exceeded
4 Execution timed out 2050 ms 37192 KB Time limit exceeded
5 Execution timed out 2045 ms 37192 KB Time limit exceeded
6 Execution timed out 2070 ms 690756 KB Time limit exceeded
7 Execution timed out 2035 ms 690756 KB Time limit exceeded
8 Execution timed out 2062 ms 690756 KB Time limit exceeded
9 Correct 371 ms 690756 KB Output is correct
10 Execution timed out 2033 ms 690756 KB Time limit exceeded
11 Execution timed out 2033 ms 690756 KB Time limit exceeded
12 Execution timed out 2050 ms 690756 KB Time limit exceeded
13 Execution timed out 2057 ms 690756 KB Time limit exceeded
14 Execution timed out 2062 ms 690756 KB Time limit exceeded
15 Execution timed out 2059 ms 690756 KB Time limit exceeded
16 Execution timed out 2052 ms 690756 KB Time limit exceeded
17 Execution timed out 2067 ms 690756 KB Time limit exceeded
18 Execution timed out 2056 ms 690756 KB Time limit exceeded
19 Execution timed out 2055 ms 690756 KB Time limit exceeded
20 Execution timed out 2025 ms 690756 KB Time limit exceeded
21 Execution timed out 2047 ms 690756 KB Time limit exceeded
22 Execution timed out 2063 ms 690756 KB Time limit exceeded
23 Execution timed out 2068 ms 690756 KB Time limit exceeded
24 Execution timed out 2056 ms 690756 KB Time limit exceeded
25 Execution timed out 2050 ms 690756 KB Time limit exceeded
26 Correct 927 ms 797308 KB Output is correct
27 Execution timed out 2122 ms 1003268 KB Time limit exceeded
28 Execution timed out 2079 ms 1003268 KB Time limit exceeded
29 Execution timed out 2090 ms 1003268 KB Time limit exceeded
30 Execution timed out 2096 ms 1003268 KB Time limit exceeded
31 Execution timed out 2045 ms 1003268 KB Time limit exceeded
32 Execution timed out 2055 ms 1003268 KB Time limit exceeded