Submission #758633

#TimeUsernameProblemLanguageResultExecution timeMemory
758633KN200711Cave (IOI13_cave)C++14
0 / 100
477 ms424 KiB
#include "cave.h" # include <bits/stdc++.h> using namespace std; int pos[5001], fn[5001], cek[5001]; void exploreCave(int N) { for(int i=0;i<N;i++) pos[i] = -1; for(int i=0;i<N;i++) { // cari posisinya dimana skrg for(int k=0;k<N;k++) { if(pos[k] == -1) cek[k] = 0; else cek[k] = pos[k]; } int v = tryCombination(cek); bool P; if(v <= i) P = 1; else P = 0; // cout<<P<<endl; int ans = -1, l = 0, r = N - 1; while(l <= r) { int mid = (l + r) / 2; for(int d=0;d<=mid;d++) { if(pos[d] == -1) cek[d] = 1 - cek[d]; } // for(int k=0;k<N;k++) cout<<cek[k]<<" "; // cout<<endl; int sv = tryCombination(cek); if(sv == -1) sv = N + 1; // cout<<"mid : "<<mid<<" "<<sv<<endl; bool Q; if(sv <= i) { Q = 1; } else Q = 0; if(P == Q) { ans = mid; l = mid + 1; } else { r = mid - 1; } for(int d=0;d<=mid;d++) { if(pos[d] == -1) cek[d] = 1 - cek[d]; } } ans++; // cout<<i<<" "<<ans<<endl; pos[ans] = P; fn[ans] = i; } answer(pos, fn); }
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