#include<bits/stdc++.h> using namespace std; typedef long long ll; typedef pair<int, int> pii; typedef pair<ll, ll> pll; #define ST first #define ND second #define PB push_back #define SIZE(a) (int(a.size())) const int maxn = 100100; set<int> points[2][maxn]; struct Path { set<pii> s; int t; Path(int t) : t(t) {} void addv(vector<pii> v) { for(pii a : v) { s.insert(a); } } bool has_point(pii a) { auto it = s.upper_bound(a); pii c = (*it); it--; pii b = (*it); if(b.ST == c.ST && b.ST == a.ST && b.ND <= a.ND && a.ND <= c.ND) { return true; } if(b.ND == c.ND && b.ND == a.ND && b.ST <= a.ST && a.ST <= c.ST) { return true; } return false; } void upd(pii a) { auto it = s.upper_bound(a); a.ST--; a.ND++; vector<pii> td; vector<pii> ta; ta.PB(a); it--; while(true) { if((*it).ST < a.ST) { break; } td.PB((*it)); if(it == s.begin()) { break; } it--; } if(td.empty()) { ta.PB({a.ST, a.ND-1}); } else if(td.back().ST > a.ST) { ta.PB({a.ST, td.back().ND}); } else { td.pop_back(); } it = s.upper_bound(a); while(true) { if((*it).ND > a.ND) { break; } td.PB((*it)); it++; if(it == s.end()) { break; } } if(td.empty()) { ta.PB({a.ST+1, a.ND}); } else if(td.back().ND < a.ND) { ta.PB({td.back().ST, a.ND}); } else { td.pop_back(); } for(pii b : td) { s.erase(b); } for(pii b : ta) { s.insert(b); } auto itr = points[t][a.ST].upper_bound(a.ND); if(itr != points[t][a.ST].begin()) { itr--; pii e = {a.ST, (*itr)}; if(has_point(e)) { upd(e); } } auto itc = points[1-t][a.ND].upper_bound(a.ST-1); if(itc != points[1-t][a.ND].end()) { pii e = {(*itc), a.ND}; if(has_point(e)) { upd(e); } } } void show() { for(pii x : s) { cerr << x.ST << "," << x.ND << " "; } cerr << "\n"; } }; Path p(0), q(1); bool check(pii a, int id) { bool x, y; x = p.has_point(a); y = q.has_point({a.ND, a.ST}); // cerr << "x: " << x << " y: " << y << "\n"; if(x && y) { return true; } if(x) { p.upd(a); } if(y) { q.upd({a.ND, a.ST}); } points[0][a.ST].insert(a.ND); points[1][a.ND].insert(a.ST); return false; } int main() { ios_base::sync_with_stdio(0); int n, m, k; cin >> n >> m >> k; p.addv({{0, 0}, {n-1, 0}, {n-1, m-1}}); q.addv({{0, 0}, {m-1, 0}, {m-1, n-1}}); int x = 0; for(int i=2; i < k+2; i++) { int r, c, z; // cin >> r >> c; cin >> r >> c >> z; r = ((r^x)%n+n)%n; c = ((c^x)%m+m)%m; // cerr << r << " " << c << "\n"; bool a = check({r, c}, i); if(a) { cout << "TAK\n"; x = x^z; } else { cout << "NIE\n"; } // p.show(); // q.show(); } }
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 | #include<bits/stdc++.h> using namespace std; typedef long long ll; typedef pair<int, int> pii; typedef pair<ll, ll> pll; #define ST first #define ND second #define PB push_back #define SIZE(a) (int(a.size())) const int maxn = 100100; set<int> points[2][maxn]; struct Path { set<pii> s; int t; Path(int t) : t(t) {} void addv(vector<pii> v) { for(pii a : v) { s.insert(a); } } bool has_point(pii a) { auto it = s.upper_bound(a); pii c = (*it); it--; pii b = (*it); if(b.ST == c.ST && b.ST == a.ST && b.ND <= a.ND && a.ND <= c.ND) { return true; } if(b.ND == c.ND && b.ND == a.ND && b.ST <= a.ST && a.ST <= c.ST) { return true; } return false; } void upd(pii a) { auto it = s.upper_bound(a); a.ST--; a.ND++; vector<pii> td; vector<pii> ta; ta.PB(a); it--; while(true) { if((*it).ST < a.ST) { break; } td.PB((*it)); if(it == s.begin()) { break; } it--; } if(td.empty()) { ta.PB({a.ST, a.ND-1}); } else if(td.back().ST > a.ST) { ta.PB({a.ST, td.back().ND}); } else { td.pop_back(); } it = s.upper_bound(a); while(true) { if((*it).ND > a.ND) { break; } td.PB((*it)); it++; if(it == s.end()) { break; } } if(td.empty()) { ta.PB({a.ST+1, a.ND}); } else if(td.back().ND < a.ND) { ta.PB({td.back().ST, a.ND}); } else { td.pop_back(); } for(pii b : td) { s.erase(b); } for(pii b : ta) { s.insert(b); } auto itr = points[t][a.ST].upper_bound(a.ND); if(itr != points[t][a.ST].begin()) { itr--; pii e = {a.ST, (*itr)}; if(has_point(e)) { upd(e); } } auto itc = points[1-t][a.ND].upper_bound(a.ST-1); if(itc != points[1-t][a.ND].end()) { pii e = {(*itc), a.ND}; if(has_point(e)) { upd(e); } } } void show() { for(pii x : s) { cerr << x.ST << "," << x.ND << " "; } cerr << "\n"; } }; Path p(0), q(1); bool check(pii a, int id) { bool x, y; x = p.has_point(a); y = q.has_point({a.ND, a.ST}); // cerr << "x: " << x << " y: " << y << "\n"; if(x && y) { return true; } if(x) { p.upd(a); } if(y) { q.upd({a.ND, a.ST}); } points[0][a.ST].insert(a.ND); points[1][a.ND].insert(a.ST); return false; } int main() { ios_base::sync_with_stdio(0); int n, m, k; cin >> n >> m >> k; p.addv({{0, 0}, {n-1, 0}, {n-1, m-1}}); q.addv({{0, 0}, {m-1, 0}, {m-1, n-1}}); int x = 0; for(int i=2; i < k+2; i++) { int r, c, z; // cin >> r >> c; cin >> r >> c >> z; r = ((r^x)%n+n)%n; c = ((c^x)%m+m)%m; // cerr << r << " " << c << "\n"; bool a = check({r, c}, i); if(a) { cout << "TAK\n"; x = x^z; } else { cout << "NIE\n"; } // p.show(); // q.show(); } } |