제출 #352078

#제출 시각아이디문제언어결과실행 시간메모리
352078amunduzbaev앵무새 (IOI11_parrots)C++14
99 / 100
13 ms1544 KiB
#include "encoder.h" #include "encoderlib.h" #ifndef EVAL #include "grader.cpp" #endif #include <bits/stdc++.h> using namespace std; #define pb push_back #define sz(x) (int)x.size() void encode(int n, int x[]){ vector<int> ans; int xx = 0; for(int i=0;i<8;i++){ int cnt = 0; for(int j=0;j<n;j++){ if(x[j] >> i & 1) cnt++; } if(cnt * 2 >= n) xx += (1<<i); } //cout<<xx<<"\n"; for(int i=0;i<n;i++){ x[i] ^= xx; for(int j=0;j<8;j+=2){ int f = j, s = j+1; if(x[i] >> f & 1) ans.pb((i << 2) + j/2); if(x[i] >> s & 1){ ans.pb((i << 2) + j/2); ans.pb((i << 2) + j/2); } } } for(int i=0;i<sz(ans);i++){ send(ans[i]); } for(int i=0;i<4;i++) send(xx); }
#include "decoder.h" #include "decoderlib.h" #ifndef EVAL #include "grader.cpp" #endif #include <bits/stdc++.h> using namespace std; void decode(int n, int l, int ans[]){ map<int, int> mm; for(int i=0;i<l;i++) mm[ans[i]]++; int xx = 0; for(int i=0;i<l;i++){ if(mm[ans[i]] >= 4){ mm[ans[i]] -= 4; xx = ans[i]; break; } } //cout<<"_____________\n"; //cout<<xx<<"\n"; //for(int i=0;i<l;i++){ //for(int j=0;j<8;j++){ //cout<<(ans[i] >> j & 1); //}cout<<"\n"; //}cout<<"\n"; vector<int> res(n); for(int i=0;i<n;i++){ for(int j=0;j<8;j+=2){ int gr = j/2; res[i] += mm[(i << 2) + gr]*(1 << j); } } //for(int i=0;i<n;i++) cout<<(res[i] ^ xx)<<" "; //cout<<"\n"; for(int i=0;i<n;i++){ output(res[i] ^ xx); } }
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