제출 #476292

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
476292		Mackerel_Pike	Patkice (COCI20_patkice)	C++14	50 / 50	1 ms	332 KiB

patkice

#include <bits/stdc++.h>

using namespace std;

#define MP make_pair
#define PB push_back
#define fst first
#define snd second

const int dx[4] = {0, -1, 0, 1};
const int dy[4] = {-1, 0, 1, 0};
const char CH[5] = "WNES";
const int maxn = 105;

int n, m;
int dis[maxn][maxn];
char s[maxn][maxn];
vector<pair<int, char> > vec;

int main(){
  //freopen("patkice.in", "r", stdin);
  
  scanf("%d%d", &n, &m);
  for(int i = 0; i < n; ++i)
    scanf("%s", s[i]);

  for(int i = 0; i < n; ++i)
    for(int j = 0; j < m; ++j)
      if(s[i][j] == 'o'){
	for(int k = 0; k < 4; ++k){
	  memset(dis, -1, sizeof(dis));
	  dis[i][j] = 0; int cur = 1, x, y;
	  for(x = i + dx[k], y = j + dy[k]; x >= 0 && x < n && y >= 0 && y < m && !~dis[x][y] && s[x][y] != '.' && s[x][y] != 'x'; ++cur){
	    dis[x][y] = cur;
	    if(s[x][y] == '<')
	      --y;
	    else if(s[x][y] == '>')
	      ++y;
	    else if(s[x][y] == '^')
	      --x;
	    else
	      ++x;
	  }
	  if(s[x][y] == 'x')
	    vec.PB(MP(cur, CH[k]));
	}
      }

  sort(vec.begin(), vec.end());
  if(!vec.size())
    puts(":(");
  else
    puts(":)"), putchar(vec[0].snd);
  return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

patkice.cpp: In function 'int main()':
patkice.cpp:23:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |   scanf("%d%d", &n, &m);
      |   ~~~~~^~~~~~~~~~~~~~~~
patkice.cpp:25:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |     scanf("%s", s[i]);
      |     ~~~~~^~~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 20 / 20