제출 #757666

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
757666	2023-06-13 14:27:23	drdilyor	Tracks in the Snow (BOI13_tracks)	C++17	80.31 / 100	2104 ms	1048576 KiB

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#include <bits/stdc++.h>
using namespace std;
using ll = long long;
signed main() {
    cin.tie(0)->sync_with_stdio(0);
    int n, m;
    cin >> n >> m;
    vector<string> mat(n);
    for (string& s : mat) {
        cin >> s;
    }
    auto id = [m](int i, int j) { return i* m + j;};
    vector<vector<pair<int,int>>> adj(n * m);
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            for (auto [di, dj] : {pair{0, -1}, {0, 1}, {-1, 0}, {1, 0}}) {
                int ni = i + di;
                int nj = j + dj;
                if (clamp(ni, 0,n-1) == ni && clamp(nj, 0, m-1) == nj) {
                    if (mat[ni][nj] == '.' || mat[i][j] == '.') continue;
                    int c = mat[i][j] != mat[ni][nj];
                    adj[id(i, j)].push_back({id(ni, nj), c});
                }
            }
        }
    }
 
 
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• Subtask 1: 30 / 30
• Subtask 2: 50.3125 / 70