#include <bits/stdc++.h> using namespace std; typedef unsigned long long ull; typedef long long ll; typedef long double ld; typedef pair<int, int> PII; typedef pair<ll, int> PILL; typedef pair<ll, ll> PLL; const int MAX_N = 1e6+5; const int M = 3e4+5; const ll INF = (ll)(1e16); const int inf = 1e9; const ll MOD = 1000000007LL; int n, m, queries; vector<vector<string>> city; string normalize(string s) { string res = s; int pos = 0; while (res.size() < 8) { res += s[pos]; pos++; pos %= 8; } return res; } int cell_to_number(int row, int col) { return row * (m + 1) + col + 1; } bool inside(int row, int col) { return row >= 0 && row <= n && col >= 0 && col <= m; } bool inside_crossings(int row, int col) { return row >= 0 && row < n && col >= 0 && col < m; } int get(int row, int col, int now, char wanted) { int len = city[row][col].size(); now %= len; int res = 0; while (city[row][col][now] != wanted) { res++; now++; now %= len; } return res; } void dijkstra(int a, int b, int c, int d, int t) { vector<vector<int>> dist(n + 1, vector<int>(m + 1, inf)); dist[a][b] = 0; set<pair<int, PII>> Q; Q.insert(make_pair(0, make_pair(a, b))); while (!Q.empty()) { pair<int, PII> best = *Q.begin(); int row = best.second.first; int col = best.second.second; int now = t + dist[row][col]; //cout << "NOW: " << now << '\n'; //cout << row << ", " << col << ": " << dist[row][col] << '\n'; if (row == c && col == d) { break; } Q.erase(Q.begin()); // up if (inside(row - 1, col)) { int cost = 8; if (inside_crossings(row-1, col-1)) { cost = min(cost, get(row-1, col-1, now, '0')); } if (inside_crossings(row-1, col)) { cost = min(cost, get(row-1, col, now, '0')); } int tmp = dist[row][col] + cost; if (tmp < dist[row-1][col]) { dist[row-1][col] = tmp; Q.insert(make_pair(tmp, make_pair(row-1, col))); } } // down if (inside(row + 1, col)) { int cost = 8; if (inside_crossings(row, col)) { cost = min(cost, get(row, col, now, '0')); } if (inside_crossings(row, col-1)) { cost = min(cost, get(row, col-1, now, '0')); } int tmp = dist[row][col] + cost; if (tmp < dist[row+1][col]) { dist[row+1][col] = tmp; Q.insert(make_pair(tmp, make_pair(row+1, col))); } } // left if (inside(row, col - 1)) { int cost = 8; if (inside_crossings(row-1, col-1)) { cost = min(cost, get(row-1, col-1, now, '1')); } if (inside_crossings(row, col-1)) { cost = min(cost, get(row, col-1, now, '1')); } int tmp = dist[row][col] + cost; if (tmp < dist[row][col-1]) { dist[row][col-1] = tmp; Q.insert(make_pair(tmp, make_pair(row, col-1))); } } // right if (inside(row, col + 1)) { int cost = 8; if (inside_crossings(row-1, col)) { cost = min(cost, get(row-1, col, now, '1')); } if (inside_crossings(row, col)) { cost = min(cost, get(row, col, now, '1')); } int tmp = dist[row][col] + cost; if (tmp < dist[row][col+1]) { dist[row][col+1] = tmp; Q.insert(make_pair(tmp, make_pair(row, col+1))); } } } /*for (int i = 0; i <= n; i++) { for (int j = 0; j <= m; j++) { cout << dist[i][j] << ' '; } cout << '\n'; } cout << '\n';*/ cout << t + dist[c][d] << '\n'; } int main() { ios_base::sync_with_stdio(0); cin.tie(0); cin >> n >> m >> queries; city.resize(n, vector<string>(m)); for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { cin >> city[i][j]; } } for (int qq = 0; qq < queries; qq++) { int a, b, c, d; int t; cin >> t >> a >> b >> c >> d; dijkstra(a, b, c, d, t); } return 0; }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 | #include <bits/stdc++.h> using namespace std; typedef unsigned long long ull; typedef long long ll; typedef long double ld; typedef pair<int, int> PII; typedef pair<ll, int> PILL; typedef pair<ll, ll> PLL; const int MAX_N = 1e6+5; const int M = 3e4+5; const ll INF = (ll)(1e16); const int inf = 1e9; const ll MOD = 1000000007LL; int n, m, queries; vector<vector<string>> city; string normalize(string s) { string res = s; int pos = 0; while (res.size() < 8) { res += s[pos]; pos++; pos %= 8; } return res; } int cell_to_number(int row, int col) { return row * (m + 1) + col + 1; } bool inside(int row, int col) { return row >= 0 && row <= n && col >= 0 && col <= m; } bool inside_crossings(int row, int col) { return row >= 0 && row < n && col >= 0 && col < m; } int get(int row, int col, int now, char wanted) { int len = city[row][col].size(); now %= len; int res = 0; while (city[row][col][now] != wanted) { res++; now++; now %= len; } return res; } void dijkstra(int a, int b, int c, int d, int t) { vector<vector<int>> dist(n + 1, vector<int>(m + 1, inf)); dist[a][b] = 0; set<pair<int, PII>> Q; Q.insert(make_pair(0, make_pair(a, b))); while (!Q.empty()) { pair<int, PII> best = *Q.begin(); int row = best.second.first; int col = best.second.second; int now = t + dist[row][col]; //cout << "NOW: " << now << '\n'; //cout << row << ", " << col << ": " << dist[row][col] << '\n'; if (row == c && col == d) { break; } Q.erase(Q.begin()); // up if (inside(row - 1, col)) { int cost = 8; if (inside_crossings(row-1, col-1)) { cost = min(cost, get(row-1, col-1, now, '0')); } if (inside_crossings(row-1, col)) { cost = min(cost, get(row-1, col, now, '0')); } int tmp = dist[row][col] + cost; if (tmp < dist[row-1][col]) { dist[row-1][col] = tmp; Q.insert(make_pair(tmp, make_pair(row-1, col))); } } // down if (inside(row + 1, col)) { int cost = 8; if (inside_crossings(row, col)) { cost = min(cost, get(row, col, now, '0')); } if (inside_crossings(row, col-1)) { cost = min(cost, get(row, col-1, now, '0')); } int tmp = dist[row][col] + cost; if (tmp < dist[row+1][col]) { dist[row+1][col] = tmp; Q.insert(make_pair(tmp, make_pair(row+1, col))); } } // left if (inside(row, col - 1)) { int cost = 8; if (inside_crossings(row-1, col-1)) { cost = min(cost, get(row-1, col-1, now, '1')); } if (inside_crossings(row, col-1)) { cost = min(cost, get(row, col-1, now, '1')); } int tmp = dist[row][col] + cost; if (tmp < dist[row][col-1]) { dist[row][col-1] = tmp; Q.insert(make_pair(tmp, make_pair(row, col-1))); } } // right if (inside(row, col + 1)) { int cost = 8; if (inside_crossings(row-1, col)) { cost = min(cost, get(row-1, col, now, '1')); } if (inside_crossings(row, col)) { cost = min(cost, get(row, col, now, '1')); } int tmp = dist[row][col] + cost; if (tmp < dist[row][col+1]) { dist[row][col+1] = tmp; Q.insert(make_pair(tmp, make_pair(row, col+1))); } } } /*for (int i = 0; i <= n; i++) { for (int j = 0; j <= m; j++) { cout << dist[i][j] << ' '; } cout << '\n'; } cout << '\n';*/ cout << t + dist[c][d] << '\n'; } int main() { ios_base::sync_with_stdio(0); cin.tie(0); cin >> n >> m >> queries; city.resize(n, vector<string>(m)); for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { cin >> city[i][j]; } } for (int qq = 0; qq < queries; qq++) { int a, b, c, d; int t; cin >> t >> a >> b >> c >> d; dijkstra(a, b, c, d, t); } return 0; } |