Submission #18434

#TimeUsernameProblemLanguageResultExecution timeMemory
18434suhgyuho_williamParrots (IOI11_parrots)C++98
100 / 100
62 ms40832 KiB
#include "encoder.h" #include "encoderlib.h" #include <stdio.h> #include <algorithm> using namespace std; // 256 H 261 > 256^64 int Ht[260][270][70]; int cntt[260][270]; int first; int tmpt[70]; #define MOD 256 void sett(){ int i,j,k; for(i=1; i<=256; i++){ cntt[i][0] = 1; Ht[i][0][1] = 1; } for(i=1; i<=256; i++){ cntt[i][1] = 1; Ht[i][1][1] = i; } for(i=1; i<=262; i++){ cntt[1][i] = 1; Ht[1][i][1] = 1; } for(i=2; i<=256; i++){ for(j=2; j<=262; j++){ for(k=1; k<=cntt[i][j-1]; k++) Ht[i][j][k] = Ht[i][j-1][k]; for(k=1; k<=cntt[i-1][j]; k++) Ht[i][j][k] += Ht[i-1][j][k]; for(k=1; k<=max(cntt[i][j-1],cntt[i-1][j]); k++){ Ht[i][j][k+1] += (Ht[i][j][k] / MOD); Ht[i][j][k] %= MOD; } for(k=max(cntt[i][j-1],cntt[i-1][j])+1; ; k++){ if(Ht[i][j][k] == 0) break; Ht[i][j][k+1] = (Ht[i][j][k] / MOD); Ht[i][j][k] %= MOD; } cntt[i][j] = k-1; } } } int comp(int n,int m,int len){ if(cntt[n][m] > len) return -1; if(cntt[n][m] < len) return 1; int i; for(i=cntt[n][m]; i>=1; i--){ if(Ht[n][m][i] > tmpt[i]) return -1; if(Ht[n][m][i] < tmpt[i]) return 1; } return 0; } void encode(int N, int M[]){ int i,j,k; int x,sum,len; first++; if(first == 1) sett(); len = N; for(i=1; i<=N; i++) tmpt[i] = 255; for(i=1; ; i++){ if(comp(256,i,len) <= 0) break; } x = sum = i; for(i=0; i<N; i++) tmpt[i+1] = M[i]; len = N; for(i=N; i>=1; i--){ if(tmpt[i] != 0) break; } len = i; for(i=256; i>=2; i--){ for(j=0; j<=x; j++){ if(comp(i-1,x-j,len) < 0) break; for(k=1; k<=cntt[i-1][x-j]; k++){ tmpt[k] -= Ht[i-1][x-j][k]; if(tmpt[k] < 0){ tmpt[k] += MOD; tmpt[k+1]--; } } for(k=cntt[i][j]+1; k<=len; k++){ if(tmpt[k] < 0){ tmpt[k] += MOD; tmpt[k+1]--; }else break; } for(k=len; k>=1; k--){ if(tmpt[k] != 0) break; } len = k; } for(k=0; k<j; k++) send(i-1); x -= j; } for(i=1; i<=x; i++) send(0); }
#include "decoder.h" #include "decoderlib.h" #include <algorithm> #include <stdlib.h> #include <stdio.h> using namespace std; int H[260][270][70]; int cnt[260][270]; int tmp[70]; #define MOD 256 void setting(){ int i,j,k; for(i=1; i<=256; i++){ cnt[i][0] = 1; H[i][0][1] = 1; } for(i=1; i<=256; i++){ cnt[i][1] = 1; H[i][1][1] = i; } for(i=1; i<=262; i++){ cnt[1][i] = 1; H[1][i][1] = 1; } for(i=2; i<=256; i++){ for(j=2; j<=262; j++){ for(k=1; k<=cnt[i][j-1]; k++) H[i][j][k] = H[i][j-1][k]; for(k=1; k<=cnt[i-1][j]; k++) H[i][j][k] += H[i-1][j][k]; for(k=1; k<=max(cnt[i][j-1],cnt[i-1][j]); k++){ H[i][j][k+1] += (H[i][j][k] / MOD); H[i][j][k] %= MOD; } for(k=max(cnt[i][j-1],cnt[i-1][j])+1; ; k++){ if(H[i][j][k] == 0) break; H[i][j][k+1] = (H[i][j][k] / MOD); H[i][j][k] %= MOD; } cnt[i][j] = k-1; } } } int compare(int n,int m,int len){ if(cnt[n][m] > len) return -1; if(cnt[n][m] < len) return 1; int i; for(i=cnt[n][m]; i>=1; i--){ if(H[n][m][i] > tmp[i]) return -1; if(H[n][m][i] < tmp[i]) return 1; } return 0; } int firsttime; int many[260]; int ans[100]; void decode(int N, int L, int X[]){ int i,j,k; int x,sum,len; firsttime++; if(firsttime == 1) setting(); for(i=1; i<=N; i++) tmp[i] = 255; len = N; for(i=1; i<=262; i++){ if(compare(256,i,len) <= 0) break; } x = sum = i; for(i=0; i<256; i++) many[i] = 0; for(i=0; i<L; i++) many[X[i]]++; for(i=1; i<=N; i++) ans[i] = 0; for(i=255; i>=1; i--){ for(j=0; j<many[i]; j++){ for(k=1; k<=cnt[i][x-j]; k++){ ans[k] += H[i][x-j][k]; } } x -= many[i]; } for(k=1; k<N; k++){ ans[k+1] += (ans[k]/256); ans[k] %= 256; } for(k=1; k<=N; k++) output(ans[k]); }
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