제출 #1076282

#제출 시각아이디문제언어결과실행 시간메모리
1076282anton경찰관과 강도 (BOI14_coprobber)C++17
0 / 100
1 ms344 KiB
#include "coprobber.h" #include<bits/stdc++.h> using namespace std; #define pii pair<int, int> #define P complex<int> vector<vector<int>> adj; bool B[MAX_N][MAX_N]; int N; int rem[MAX_N][MAX_N]; int next_pos[MAX_N][MAX_N]; bool is_vis[2][MAX_N][MAX_N]; struct Pos{ int player_id; int cop_pos, r_pos; Pos(){}; Pos(int _id, int _cop_pos, int _r_pos){ player_id = _id; cop_pos = _cop_pos; r_pos = _r_pos; } bool& vis(){ return is_vis[player_id][cop_pos][r_pos]; } bool operator<(const Pos b)const{ if(player_id!=b.player_id){ return player_id<b.player_id; } if(cop_pos != b.cop_pos){ return cop_pos<b.cop_pos; } if(r_pos != b.r_pos){ return r_pos < b.r_pos; } return false; } }; int cop_pos = 0; void calc(Pos cur){ if(cur.vis()){ return; } cur.vis() = true; if(cur.player_id == 1){ for(auto s: adj[cur.r_pos]){ auto e = Pos(1, cop_pos, s); if(!e.vis()){ next_pos[e.cop_pos][e.r_pos] = cur.cop_pos; calc(e); } } } else{ for(auto s: adj[cur.cop_pos]){ auto e = Pos(0, s, cur.r_pos); if(!e.vis()){ rem[e.cop_pos][e.r_pos]--; if(rem[e.cop_pos][e.r_pos] == 0){ calc(e); } } } } } int start(int _N, bool A[MAX_N][MAX_N]) { N= _N; adj.resize(N); for(int i = 0; i<N; i++){ for(int j = 0; j<N; j++){ if(A[i][j]){ adj[i].push_back(j); } } } for(int i = 0; i<N; i++){ for(int j= 0; j<N; j++){ rem[i][j] = adj[j].size(); } } vector<Pos> wining; for(int i = 0; i<N; i++){ calc(Pos(0, i, i)); calc(Pos(1, i, i)); } for(int i = 0; i<N; i++){ bool ok = true; for(int j = 0; j<N; j++){ if(!is_vis[0][i][j]){ ok = false; } } if(ok){ cop_pos = i; return i; } } return -1; } int nextMove(int R) { cop_pos = next_pos[cop_pos][R]; return cop_pos; }
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