oj.uz

답안 #602479

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
602479 2022-07-23T06:36:06 Z AGE Patkice (COCI20_patkice) C++14
30 / 50
 5 ms 6636 KB 
#include<bits/stdc++.h>
#define F first
#define S second
#define int long long
#define pb push_back

using namespace std;
const int N=2e5+10,M=3e3+10,mod=1e9+7;
int idx[4]={0,0,-1,1};
int idy[4]={1,-1,0,0};
char x[4]={'E','W','N','S'};
int ans[150][150],n,m;
string s[N];

bool inside(int x,int y){
    return ((x>=0)&&(x<n)&&(y<m)&&(y>=0)&&(ans[x][y]==-1e18));
}

void floodfill(int x,int y,int type){


   if(s[x][y]=='x')
        return ;

    else if(s[x][y]=='>'){

        if(!inside(x,y+1))
            return ;

        ans[x][y+1]=ans[x][y]+1;
        floodfill(x,y+1,type);
    }

    else if(s[x][y]=='<'){

        if(!inside(x,y-1))
            return ;

        ans[x][y-1]=ans[x][y]+1;
        floodfill(x,y-1,type);

    }

    else if(s[x][y]=='v'){

        if(!inside(x+1,y))
            return ;

        ans[x+1][y]=ans[x][y]+1;
        floodfill(x+1,y,type);
    }

    else if(s[x][y]=='^'){

        if(!inside(x-1,y))
            return ;

        ans[x-1][y]=ans[x][y]+1;
        floodfill(x-1,y,type);
    }

    else{

        int newx=x+idx[type];
        int newy=y+idy[type];

        if(!inside(newx,newy))
            return ;

        ans[newx][newy]=ans[x][y]+1;
        floodfill(newx,newy,type);

    }


}
main()
{

    cin>>n>>m;

    for(int i=0;i<n;i++)
        cin>>s[i];

    int indexx,indexy;
    for(int i=0;i<n;i++)
        for(int j=0;j<m;j++)
            if(s[i][j]=='o')
                indexx=i,indexy=j;

    int indexx2,indexy2;
    for(int i=0;i<n;i++)
        for(int j=0;j<m;j++)
            if(s[i][j]=='x')
                indexx2=i,indexy2=j;

    vector<pair<int,char>>v;
    for(int i=0;i<4;i++){

        for(int j=0;j<n;j++)
            for(int k=0;k<m;k++)
                ans[j][k]=-1e18;

        ans[indexx][indexy]=0;


        floodfill(indexx,indexy,i);

        if(ans[indexx2][indexy2]!=-1e18)
            v.pb({ans[indexx2][indexy2],x[i]});


    }

    if(v.size()==0){

        cout<<":("<<endl;
        return 0;

    }

    sort(v.begin(),v.end());
    cout<<":)"<<endl;
    cout<<v[0].S<<endl;

    return 0;
}

Compilation message

patkice.cpp:77:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   77 | main()
      | ^~~~
patkice.cpp: In function 'int main()':
patkice.cpp:107:18: warning: 'indexy' may be used uninitialized in this function [-Wmaybe-uninitialized]
  107 |         floodfill(indexx,indexy,i);
      |         ~~~~~~~~~^~~~~~~~~~~~~~~~~
patkice.cpp:107:18: warning: 'indexx' may be used uninitialized in this function [-Wmaybe-uninitialized]
patkice.cpp:109:32: warning: 'indexy2' may be used uninitialized in this function [-Wmaybe-uninitialized]
  109 |         if(ans[indexx2][indexy2]!=-1e18)
      |            ~~~~~~~~~~~~~~~~~~~~^
patkice.cpp:109:32: warning: 'indexx2' may be used uninitialized in this function [-Wmaybe-uninitialized]

Subtask #1
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 6612 KB Output is correct
2 Correct 5 ms 6568 KB Output is correct
3 Correct 5 ms 6612 KB Output is correct
4 Correct 4 ms 6636 KB Output is correct
5 Correct 3 ms 6612 KB Output is correct
6 Correct 4 ms 6484 KB Output is correct
7 Correct 4 ms 6484 KB Output is correct
8 Correct 4 ms 6612 KB Output is correct
9 Correct 4 ms 6564 KB Output is correct
10 Correct 5 ms 6572 KB Output is correct

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 6564 KB Output is correct
2 Correct 4 ms 6612 KB Output is correct
3 Correct 4 ms 6532 KB Output is correct
4 Correct 5 ms 6612 KB Output is correct
5 Correct 4 ms 6612 KB Output is correct
6 Correct 4 ms 6500 KB Output is correct
7 Correct 5 ms 6612 KB Output is correct
8 Incorrect 4 ms 6612 KB Output isn't correct
9 Halted 0 ms 0 KB -