#include <iostream> #include <vector> #include <algorithm> #include <set> #include <math.h> #include <stdio.h> #include <deque> #include <unordered_map> #include <cassert> #include <numeric> #include <queue> #include <list> using namespace std; struct UnionFind { vector<int> parent; vector<int> size; int distinct_sets = 0; UnionFind(int n) { parent.resize(n, -1); size.resize(n, -1); } void make_set(int v) { assert (v >= 0 && v < parent.size()); parent[v] = v; size[v] = 1; distinct_sets++; } void union_sets(int a, int b) { a = find_set(a); b = find_set(b); if (a != b) { if (size[a] < size[b]) swap(a, b); parent[b] = a; size[a] += size[b]; distinct_sets--; //printf("union_sets(%d,%d) distinct=%d\n", a+1, b+1, distinct_sets); } } bool contains(int v) { return parent[v] != -1; } int find_set(int v) { if (v == parent[v]) return v; return parent[v] = find_set(parent[v]); } void clean() { for (int i=0; i < (int)parent.size(); i++) { make_set(i); } } }; vector<int> getAdj(const vector<vector<int> > &rows, pair<int, int> pos) { const int n=rows[0].size(); assert (pos.first >= 0 && pos.first < 2); assert (pos.second >=0 && pos.second < rows[0].size()); int left = pos.second - 1; int right = pos.second + 1; if (left < 0) left += n; if (right >= n) right -= n; int vertical = pos.first + 1; if (vertical == 2) vertical = 0; int a = rows[pos.first][left]; int b = rows[pos.first][right]; int c = rows[vertical][pos.second]; if (a == b) return {a,c}; return {a,b,c}; } bool within_interval(int elem, int left, int right) { return elem >= left && elem <= right; } void print_vec(const vector<int> &v, string msg) { printf("%s: ", msg.c_str()); for (int i=0; i<v.size(); i++) { printf("%d ", v[i] + 1); } printf("\n"); } vector<int> solveSlow(const vector<vector<int> > &rows, const int K) { const int n = rows[0].size(); const int twoN = 2 * n; assert (rows.size() == 2); vector<pair<int, int> > whereIs(twoN, {-1,-1}); for (int r=0; r < 2; r++) { for (int i=0; i < n; i++) { int elem = rows[r][i]; whereIs[elem] = {r,i}; } } vector<int> res(K, 0); for (int left=0; left < twoN; left++) { UnionFind uf(twoN); for (int right=left; right < twoN; right++) { int current_v = right; //printf("processing v: %d\n", current_v+1); uf.make_set(current_v); pair<int,int> pos = whereIs[current_v]; vector<int> adj = getAdj(rows, pos); //print_vec(adj, "adj"); for (auto x : adj) { if (uf.contains(x)) { uf.union_sets(current_v, x); } } int ciekawosPrzedzialu = uf.distinct_sets; assert (ciekawosPrzedzialu >= 1); if (ciekawosPrzedzialu <= K) { res[ciekawosPrzedzialu-1]++; //printf("interval[%d,%d]->%d\n", left+1, right+1, ciekawosPrzedzialu); } } } return res; } int main() { vector<vector<int> > rows(2); int n, k; scanf("%d%d", &n, &k); for (int j=0; j < 2; j++) { for (int i=0; i < n; i++) { int x; scanf("%d", &x); rows[j].push_back(x-1); } } vector<int> res = solveSlow(rows, k); for (int i=0; i < (int)res.size(); i++) { printf("%d ", res[i]); } printf("\n"); 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 | #include <iostream> #include <vector> #include <algorithm> #include <set> #include <math.h> #include <stdio.h> #include <deque> #include <unordered_map> #include <cassert> #include <numeric> #include <queue> #include <list> using namespace std; struct UnionFind { vector<int> parent; vector<int> size; int distinct_sets = 0; UnionFind(int n) { parent.resize(n, -1); size.resize(n, -1); } void make_set(int v) { assert (v >= 0 && v < parent.size()); parent[v] = v; size[v] = 1; distinct_sets++; } void union_sets(int a, int b) { a = find_set(a); b = find_set(b); if (a != b) { if (size[a] < size[b]) swap(a, b); parent[b] = a; size[a] += size[b]; distinct_sets--; //printf("union_sets(%d,%d) distinct=%d\n", a+1, b+1, distinct_sets); } } bool contains(int v) { return parent[v] != -1; } int find_set(int v) { if (v == parent[v]) return v; return parent[v] = find_set(parent[v]); } void clean() { for (int i=0; i < (int)parent.size(); i++) { make_set(i); } } }; vector<int> getAdj(const vector<vector<int> > &rows, pair<int, int> pos) { const int n=rows[0].size(); assert (pos.first >= 0 && pos.first < 2); assert (pos.second >=0 && pos.second < rows[0].size()); int left = pos.second - 1; int right = pos.second + 1; if (left < 0) left += n; if (right >= n) right -= n; int vertical = pos.first + 1; if (vertical == 2) vertical = 0; int a = rows[pos.first][left]; int b = rows[pos.first][right]; int c = rows[vertical][pos.second]; if (a == b) return {a,c}; return {a,b,c}; } bool within_interval(int elem, int left, int right) { return elem >= left && elem <= right; } void print_vec(const vector<int> &v, string msg) { printf("%s: ", msg.c_str()); for (int i=0; i<v.size(); i++) { printf("%d ", v[i] + 1); } printf("\n"); } vector<int> solveSlow(const vector<vector<int> > &rows, const int K) { const int n = rows[0].size(); const int twoN = 2 * n; assert (rows.size() == 2); vector<pair<int, int> > whereIs(twoN, {-1,-1}); for (int r=0; r < 2; r++) { for (int i=0; i < n; i++) { int elem = rows[r][i]; whereIs[elem] = {r,i}; } } vector<int> res(K, 0); for (int left=0; left < twoN; left++) { UnionFind uf(twoN); for (int right=left; right < twoN; right++) { int current_v = right; //printf("processing v: %d\n", current_v+1); uf.make_set(current_v); pair<int,int> pos = whereIs[current_v]; vector<int> adj = getAdj(rows, pos); //print_vec(adj, "adj"); for (auto x : adj) { if (uf.contains(x)) { uf.union_sets(current_v, x); } } int ciekawosPrzedzialu = uf.distinct_sets; assert (ciekawosPrzedzialu >= 1); if (ciekawosPrzedzialu <= K) { res[ciekawosPrzedzialu-1]++; //printf("interval[%d,%d]->%d\n", left+1, right+1, ciekawosPrzedzialu); } } } return res; } int main() { vector<vector<int> > rows(2); int n, k; scanf("%d%d", &n, &k); for (int j=0; j < 2; j++) { for (int i=0; i < n; i++) { int x; scanf("%d", &x); rows[j].push_back(x-1); } } vector<int> res = solveSlow(rows, k); for (int i=0; i < (int)res.size(); i++) { printf("%d ", res[i]); } printf("\n"); return 0; } |