제출 #422359

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
422359	2021-06-10 04:40:41	SirCovidThe19th	로봇 (APIO13_robots)	C++14	100 / 100	1073 ms	126220 KiB

robots

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#include <bits/stdc++.h>
using namespace std;
#define FOR(i, x, y) for (int i = x; i < y; i++)
const int mx = 500;
int n, w, h, ans = mx*mx+1, dp[mx][mx][9][9], di[4] = {-1, 0, 1, 0}, dj[4] = {0, 1, 0, -1}; 
char grid[mx][mx]; pair<int, int> pos[4][mx][mx]; vector<pair<int, int>> trav[mx*mx];
pair<int, int> nextPos(int i, int j, int d){
    int old = d; d = (d-(grid[i][j] == 'A')+(grid[i][j] == 'C')+4)%4;
    int r = i+di[d], c = j+dj[d]; pos[old][i][j] = {-2, -2}; pair<int, int> ret;
    if (!(r < h and r >= 0 and c < w and c >= 0 and grid[r][c] != 'x')) ret = {i, j};
    else if (pos[d][r][c] != make_pair(-1, -1)) ret = pos[d][r][c];
    else ret = nextPos(r, c, d);
    return pos[old][i][j] = ret;
}
int main(){
    cin >> n >> w >> h; memset(dp, 0x3f, sizeof(dp));
    FOR(i, 0, h) FOR(j, 0, w) { cin >> grid[i][j]; if (isdigit(grid[i][j])) dp[i][j][grid[i][j]-'1'][grid[i][j]-'1'] = 0; }
    FOR(i, 0, h) FOR(j, 0, w) FOR(d, 0, 4) pos[d][i][j] = {-1, -1};
    FOR(i, 0, h) FOR(j, 0, w) FOR(d, 0, 4) if (grid[i][j] != 'x') nextPos(i, j, d);
    FOR(l, 0, n){
        FOR(x, 0, n-l){
            int y = x+l; 
            FOR(i, 0, h) FOR(j, 0, w) if (grid[i][j] != 'x'){
                FOR(mid, x, y)
                    dp[i][j][x][y] = min(dp[i][j][x][y], dp[i][j][x][mid]+dp[i][j][mid+1][y]);
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 30 / 30
• Subtask 4: 40 / 40