제출 #637749

#제출 시각아이디문제언어결과실행 시간메모리
637749slime죄수들의 도전 (IOI22_prison)C++17
80 / 100
12 ms1012 KiB
#include "prison.h" #include "bits/stdc++.h" using namespace std; #include <vector> std::vector<std::vector<int>> devise_strategy(int N); int bit(int n, int b) { int p = 1; for(int i=0; i<b; i++) p *= 3; n %= (3 * p); return n / p; } std::vector<std::vector<int>> devise_strategy(int N) { int x = 22; vector<vector<int> > ans; // each array inside should hv length = N + 1 ans.resize(x + 1); for(int i=0; i<=x; i++) ans[i].resize(N + 1); ans[0][0] = 0; for(int i=1; i<=N; i++) ans[0][i] = bit(i, 7) + 1; for(int i=7; i>=1; i--) { for(int j=(7-i) * 3 + 1; j<=(7-i) * 3 + 3; j++) { ans[j][0] = i % 2; int cc = j - (7-i) * 3 - 1; for(int k=1; k<=N; k++) { int bb = bit(k, i); if(bb > cc) ans[j][k] = (i % 2 ? -1 : -2); else if(bb < cc) ans[j][k] = (i % 2 ? -2 : -1); else { ans[j][k] = min(x, (8-i) * 3 + bit(k, i-1) + 1); if(i == 1 && bit(k, 0) == 2) ans[j][k] = -1; else if(i == 1 && bit(k, 0) == 0) ans[j][k] = -2; } } } } // Hardcode 22 ans[22][0] = 0; for(int i=1; i<=N; i++) { int bb = bit(i, 0); if(bb > 1) ans[22][i] = -2; else ans[22][i] = -1; } return ans; }
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