Submission #1113710

#TimeUsernameProblemLanguageResultExecution timeMemory
1113710shidou26Zvijezda (COCI19_zvijezda)C++14
110 / 110
117 ms8020 KiB
#include <bits/stdc++.h> using namespace std; #define int long long #define endl '\n' #define all(v) v.begin(), v.end() #define dbg(x) "[" #x " = " << (x) << "]" mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count()); template<typename T> bool maximize(T &a, T b) { if(a < b) { a = b; return true; }else return false; } template<typename T> bool minimize(T &a, T b) { if(a > b) { a = b; return true; }else return false; } template<typename T> T random_int(T a, T b) { return uniform_int_distribution<T>(a, b)(rng); } typedef long long ll; typedef long double ld; typedef pair<int, int> ii; typedef pair<ll, int> li; const int N = 1e5 + 3; struct Point { int x, y; Point () {} Point (int x, int y) : x(x), y(y) {} }; struct Vector { int x, y; Vector (Point a, Point b) { x = b.x - a.x; y = b.y - a.y; } friend double cross(Vector a, Vector b) { return (double)a.x * b.y - (double)a.y * b.x; } }; int t, n, q; Point p[N]; int x, y; double ccw(Point a, Point b, Point c) { return cross(Vector(a, b), Vector(a, c)); } bool isLeft(int i) { return ccw(p[i], p[i % n + 1], Point(x, y)) >= 0; } int search(int l, int r) { int left = l, right = r, result = 0; while(left <= right) { int mid = (left + right) / 2; if(isLeft(l) == isLeft(mid)) { result = mid; left = mid + 1; }else right = mid - 1; } int length = result - l + 1; return (isLeft(l) ? length : n / 2 - length); } int solve(int tmpx, int tmpy) { x = tmpx; y = tmpy; int a = isLeft(1), b = isLeft(n / 2 + 1); if(a == b) return a; else return search(1, n / 2) + search(n / 2 + 1, n) > n / 2; } void process() { int p = 0; while(q--) { int a, b; cin >> a >> b; int answer = solve(a ^ (t * p * p * p), b ^ (t * p * p * p)); p += answer; cout << (answer ? "DA" : "NE") << endl; } } void input() { cin >> t >> n; for(int i = 1; i <= n; i++) { cin >> p[i].x >> p[i].y; } cin >> q; } int32_t main() { ios_base::sync_with_stdio(0); cin.tie(0); #define task "Date_A_Live" if(fopen(task".inp", "r")) { freopen(task".inp", "r", stdin); freopen(task".out", "w", stdout); } int testcase = 1; // cin >> testcase; for(int i = 1; i <= testcase; i++) { input(); process(); } cerr << "Saa, watashtachi no deito hajimemashou" << endl; return 0; } /* B####BGGGGP7^^:::::^!J555PPPPPPPGGGGGB###BGGGGGBBGGBGGGGPPPPPPGGGBGGPPPPPPPPPPPPPPPPPPPPP555555555555555555555555YYJ!:... :!~~77!~~7??JJ?!~!?JYYJ BBB###BGGGP5~:^^:^~J555PPPPPPPGGGGGB####BGGGGGGBBGGGGGGGGGGGGGGGBBGPPPPPPPPPPPPPPPPPPPPPPPPPPPPP5555555PPPP55555555YYJ~... .~!~!77~~7JJJJ?!~!?JYYY BBBBB#BGGGPP!:^:^?5PPPPPPPPPGGGGGB#####BGGGGGGBBGGGGGGGGGGGGGGGB##GGGPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP5555555YY?^. .~!~!77~~7JJJJ?!~!?YYYY BBBBBBGGGGGJ^^^!YPPPPPPPGGGGGGGGB#####BGGGGGGB#BBBGGGGGGGGGGGGGBB#GGGGGGGGGPPPPPPPPPPGGPPPPPPPPPPPPPPPPPPPPPPPPPPP5555Y5Y!. ^!~!77!~!?JJJ?7!!?YYYY BBBBBBBGGGJ~:^7PPPPGPGGGGGGGGGB###B##GGGBBGBBB#BBBGGGGGGGGGGGGBBB#BGGGGGGGGGGPPPPPPGGGGGGPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP55YJ: :~!!777~!?JJJJ7!!?YYYY BBBBBBBGGY~:^JGPGGGGGGGGGGGGBB###BB#BGGGGGBGB##BBBGGGGGGGGGGGBBGB#BGGGGGGBGGGGGGGGGGGGGGGGGPPPPPPPGGGGGPPPPPPPGGPPPPPPPPP55Y~ .~!!777!!7JJJJ?!!?Y5YY BBBBBBBBP!^^YGGGGGGGGGGGGGGGB##BB#BBBBBBBBBBB##BBBBBGGGGGGGGB#BGB#BGGGGGBBGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGPPPGGGGGGPPPPPPGPP55?. .^!!!77!!7JYJJ?!!?Y555 ##BBBBGBY^~5GGGGGGGGGGGGBBBB##BBBBBBBBBBBBBB##BBBBBBGBBBBBGB#BGGB#BGGGGGBBGGGGGG5PGGGGGGGGGGGGGGGGGGGGGBGGGGGGGGGGGGPPGGGY5P5PY. ^!!!77!!7JYYJ?7!?Y555 ##BBBBBG7~5GGGGGGGGGGBBBBB###BBBBBBBBBBBBBBB##BBBBBBBGBBBBGBBBGGBB#BGGGBB#BGGGGGYJPGGGGGGGGGGGGGGGGPYPGGBBGGGGGGGGGGGPGPGP?JPPP5^:!!!7?7!7JYYJ?7!?Y555 ###BBBBP~5BGGGBBBBBBBBBGB###BBBBBBBBBBBBBBBB##BBBBBBBBBBBBBBBBGBGGBBBGGGG##GGGGYJ7JGGGGGGGGGGGGGGGGPJ75GBBGGGGGGGGGGGGGGGGG7JGPPP7~7!7?7!7?YYYJ?7?555P ####B#B?YBBBBBBBBBBBBBBBB#BBBBBBBBBBBBBBBBBBB#BBBGBBBBBBBBBBBBGBBGBBBBG5PB#BGGGPJJ7PGGGGGGGGGBGGGGGPPJ?PGBBBBPPGGGGBBGGPGGGG!?GPPPJ7777777?JYYJ?775P5P ######GYBBBBBBBBBBBBBBBB#BBBBBBBBBBBBBBBBBBBBBBBBBBBGGBBBBBBGGGGGGGBBGB5YB##GGGPPGYPGGGGGBBGGGGGGGGPPPJYGPB#BGYGGGBBBBGJ5GGGG~?GGGGY777?777JYYY?77Y5PP #####BGBBBBBBBBBBBBBBBB#BBBBBBBBBBBBBBBBBBBBBBBBBBBBJ5BBBBBBGGPGGGGBBGGGGGB#BGGPPGPPPPGGPG#BGGGGGGGPPPPPGPG#BGGGGGBB#B57?PGBGG:JGGGGY77??77JYYYJ77Y5PP #####BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBG?5GBBBBGGGYPGGGBBGGGGGB#BGPPPPPPPPGGPPB#BGGPPGGPPPPPPPPB#BGGGGGBB#GJ?5GBGG5:5GGGGJ7??77?JYYJ??JPPP #######BBBBBBBBBBBBBBBBBBBBBBB##BBBBBBBBBBBBBBBBBBBG7YGGBBBBGGGGGGGGGBGGGGGB#GPPPPPP5PPGPPG###GPPPPGPPPPPPPPB#BGGGGBB##BPJGBBGBJ:PPPGP7???7?JYYJ??YPPP ######BBBBBBBBBBBBBBBBBBBBBB###BBBBBBBBBBBBBB#GGBBBB?JGBGG5YBGGGGGGGGGGPPPPPBBPP5555555PPPPB###BGP5PPPP55555G#BGGGGGB##BGGGBBBGB~~GYGB57??7?JYYY??YPPP #######BBBBBBBBBBBBBBBBBBBB####BBBBBBBBBBBBBB#P5BBGB55GGGG5:YGPPPPPPPJ7P5P55G#G555555555PP5P###B#BPP55PP5555P#BGGGPGGB##GGGGBBBBG:JGGGG??J??JYYYJ?YPPP ########BBBBBBBBBBBBBBBBBBB####BBBBBBBBBBBBBB#BGBBBGGGGGGP5:.YP55555P7.755555GBP555555555P55G##PPGBBPP55PGP55B#BPPPPPG##BGBGBBBBB5.PGBBP?J??JY5YYJYPPP ########BBBBBBBBBBBBBBBBB#####BBYGBGBBBBBBBBBBBBBBBGGGGPPP5~..YP555557 .?YYY55BG555555555P55PB#GYY55PPP555GGGB##PPPPPPG&BGGGGBBBBB~~BBBBJJJ?JY55YJYPGP #########BBBBBBBBBBBB#B#######BBJYB5PBBBBBBBBBGBGBBGGPPPP5P!. .Y5YYYY? 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Compilation message (stderr)

zvijezda.cpp: In function 'int32_t main()':
zvijezda.cpp:115:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  115 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
zvijezda.cpp:116:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  116 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
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