Submission #72180

#	Time	Username	Problem	Language	Result	Execution time	Memory
72180		동진의 (#118)	Aquatic Labyrinth (FXCUP3_aqua)	C++17	0 / 100	3 ms	356 KiB

aqua

//
//  main.cpp
//  boj
//
//  Created by 주진형 on 2018. 4. 17..
//  Copyright © 2018년 주진형. All rights reserved.
//
#include<iostream>
#include<cmath>
#include<cstring>
#include<queue>
#include<stack>
#include<list>
#include<cstring>
#include<algorithm>
#define fio ios_base::sync_with_stdio(0)
//배열크기 확인
#define MAXNUM 10
using namespace std;

struct point{
    int x, y;
    point operator +(const point & a) const{
        return {x + a.x, y + a.y};
    }
};

int main(){
    int n;
    int ans=1000000000;
    int cost[MAXNUM][MAXNUM]={0};
    bool inQueue[MAXNUM][MAXNUM]={0};
    char map[MAXNUM][MAXNUM]={0};
    queue<point> q;
    memset(cost, 40, sizeof(cost));
    point dir[4] = {{1, 0}, {0, 1}, {-1, 0}, {0, -1}};
    scanf("%d", &n);
    for (int i=1; i<=n; i++)
        scanf("%s", map[i]+1);
    for (int i=0; i<=n+1; i++) {map[i][0] = map[i][n+1] = map[0][i] = map[n+1][i] = '#';}
    
    for (int i=1; i<=n; i++) {
        for (int j=1; j<=n; j++) {
            if (map[i][j] == 'M') {
                q.push({j, i});
                cost[i][j] = 0;
                inQueue[i][j] = true;
            }
        }
    }
    
    while (!q.empty()) {
        point cur = q.front(); q.pop();
        for (int i=0; i<4; i++) {
            int cnt=0;
            point next = cur;
            while (map[next.y][next.x] != 'W' && map[next.y][next.x] != '#') {
                next = next + dir[i];
            }
            while (map[next.y][next.x] == 'W') {
                cnt++;
                next = next + dir[i];
            }
            
            if (map[next.y][next.x] == '.' || map[next.y][next.x] == 'H') {
                if (cost[next.y][next.x] > cost[cur.y][cur.x] + cnt * cnt) {
                    cost[next.y][next.x] = cost[cur.y][cur.x] + cnt * cnt;
                    if (map[next.y][next.x] == 'H') {
                        ans = min(ans, cost[next.y][next.x]);
                        continue;
                    }
                    if (!inQueue[next.y][next.x]) {
                        inQueue[next.y][next.x] = true;
                        q.push(next);
                    }
                }
            }
        }
    }
    
    printf("%d\n", ans > 999999999 ? -1 : ans);
    
    return 0;
}

Compilation message (stderr)

aqua.cpp: In function 'int main()':
aqua.cpp:37:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
aqua.cpp:39:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%s", map[i]+1);
         ~~~~~^~~~~~~~~~~~~~~~

• Subtask 1: 0 / 36
• Subtask 2: 0 / 64