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Submission #448125

# Submission time Handle Problem Language Result Execution time Memory
448125 2021-07-29T02:54:47 Z jk410 Patkice (COCI20_patkice) C++17
50 / 50
 1 ms 332 KB 
#include <bits/stdc++.h>
using namespace std;
const int INF=1e9;
int N,M,sx,sy;
int dx[4]={0,-1,1,0},dy[4]={1,0,0,-1},Time[4];
bool Visited[100][100];
string A[100];
int dfs(int x,int y){
    if (x<0||x>=N||y<0||y>=M||Visited[x][y]||A[x][y]=='.')
        return INF;
    if (A[x][y]=='x')
        return 0;
    Visited[x][y]=true;
    for (int i=0; i<4; i++){
        if (A[x][y]==">^v<"[i]){
            int tmp=dfs(x+dx[i],y+dy[i]);
            if (tmp==INF)
                return INF;
            return tmp+1;
        }
    }
}
int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin>>N>>M;
    for (int i=0; i<N; i++){
        cin>>A[i];
        for (int j=0; j<M; j++){
            if (A[i][j]=='o'){
                sx=i;
                sy=j;
            }
        }
    }
    for (int i=0; i<4; i++){
        memset(Visited,false,sizeof(Visited));
        A[sx][sy]=">^v<"[i];
        Time[i]=dfs(sx,sy);
    }
    int Min=INF,idx;
    for (int i=0; i<4; i++){
        if (Time[i]<Min){
            Min=Time[i];
            idx=i;
        }
    }
    if (Min==INF)
        cout<<":(";
    else
        cout<<":)\n"<<"ENSW"[idx];
    return 0;
}

Compilation message

patkice.cpp: In function 'int dfs(int, int)':
patkice.cpp:22:1: warning: control reaches end of non-void function [-Wreturn-type]
   22 | }
      | ^

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 0 ms 332 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct