#define _CRT_SECURE_NO_WARNINGS #include #include #include #include #include #include #include #include #include #include #include #include #include #include //#include "util.h" using namespace std; typedef unsigned uint; typedef long long ll; typedef unsigned long long ull; //呪文 template ostream& operator << (ostream& ostr, const pair<_KTy, _Ty>& m) { cout << "{" << m.first << ", " << m.second << "}"; return ostr; } template ostream& operator << (ostream& ostr, const map<_KTy, _Ty>& m) { if (m.empty()) { cout << "{ }"; return ostr; } cout << "{" << *m.begin(); for (auto itr = ++m.begin(); itr != m.end(); itr++) { cout << ", " << *itr; } cout << "}"; return ostr; } template ostream& operator << (ostream& ostr, const vector<_Ty>& v) { if (v.empty()) { cout << "{ }"; return ostr; } cout << "{" << v.front(); for (auto itr = ++v.begin(); itr != v.end(); itr++) { cout << ", " << *itr; } cout << "}"; return ostr; } template ostream& operator << (ostream& ostr, const set<_Ty>& s) { if (s.empty()) { cout << "{ }"; return ostr; } cout << "{" << *(s.begin()); for (auto itr = ++s.begin(); itr != s.end(); itr++) { cout << ", " << *itr; } cout << "}"; return ostr; } #define PI 3.14159265358979323846 #define EPS 1e-6 #define MIN(a,b) ((a)<(b)?(a):(b)) #define MAX(a,b) ((a)>(b)?(a):(b)) #define all(x) (x).begin(), (x).end() enum DIR { RIGHT = 0, UP = 1, LEFT = 2, DOWN = 3 }; struct hoge { int mp[16]; int vacant; int moved; }; void init(hoge& obj) { for (int i = 0; i < 15; i++) obj.mp[i] = i + 1; obj.mp[15] = 0; obj.vacant = 15; obj.moved = 1; } bool movable(hoge& obj, DIR dir) { int* mp = obj.mp; int& vacant = obj.vacant; int& moved = obj.moved; switch (dir) { case RIGHT: if (vacant % 4 == 3) return false; if (moved & (1 << mp[vacant + 1])) return false; return true; break; case UP: if (vacant < 4) return false; if (moved & (1 << mp[vacant - 4])) return false; return true; break; case LEFT: if (vacant % 4 == 0) return false; if (moved & (1 << mp[vacant - 1])) return false; return true; break; case DOWN: if (vacant >= 12) return false; if (moved & (1 << mp[vacant + 4])) return false; return true; break; default: break; } cout << "err : movable" << endl; return false; } hoge move(hoge obj, DIR dir) { int* mp = obj.mp; int& vacant = obj.vacant; int& moved = obj.moved; switch (dir) { case RIGHT: swap(mp[vacant], mp[vacant + 1]); moved |= (1 << mp[vacant]); vacant++; break; case UP: swap(mp[vacant], mp[vacant - 4]); moved |= (1 << mp[vacant]); vacant -= 4; break; case LEFT: swap(mp[vacant], mp[vacant - 1]); moved |= (1 << mp[vacant]); vacant--; break; case DOWN: swap(mp[vacant], mp[vacant + 4]); moved |= (1 << mp[vacant]); vacant += 4; break; default: break; } return obj; } bool equal(int* mp1, int* mp2) { for (int i = 0; i < 16; i++) if (mp1[i] != mp2[i]) return false; return true; } int mp_target[16]; bool flag = false; void rec(hoge obj) { if (equal(obj.mp, mp_target)) flag = true; if (flag) return; //全部動かした if (obj.moved == (1 << 16) - 1) return; for (int dir = 0; dir < 4; dir++) { if (movable(obj, (DIR)dir)) { rec(move(obj, (DIR)dir)); } } } int yuki0228() { hoge obj; init(obj); for (int i = 0; i < 16; i++) cin >> mp_target[i]; rec(obj); cout << (flag ? "Yes" : "No") << endl; return 0; } int main() { //clock_t start, end; //start = clock(); yuki0228(); //end = clock(); //printf("%d msec.\n", end - start); return 0; }