Submission #61786

#TimeUsernameProblemLanguageResultExecution timeMemory
61786VahanParrots (IOI11_parrots)C++17
98 / 100
20 ms2728 KiB
#include "encoder.h" #include "encoderlib.h" void encode(int N, int M[]) { int a=0,q=0,inv=0; for(int i=0; i<N; i++) { int y=M[i]; for(int j=a;j<=a+3;j++) { q+=y%4; y/=4; } a+=4; } if(q>6*N) { inv=1; for(int i=1;i<=4;i++) send(0); } a=0; for(int i=0; i<N; i++) { int y=M[i]; for(int j=a;j<=a+3;j++) { if(inv==0) for(int t=1;t<=y%4;t++) send(j); else for(int t=1;t<=3-y%4;t++) send(j); y/=4; } a+=4; } }
#include "decoder.h" #include "decoderlib.h" int v[300]; void decode(int N, int L, int X[]) { for(int i=0;i<=255;i++) v[i]=0; for(int i=0; i<L; i++) v[X[i]]++; if(v[0]>=4) { v[0]-=4; for(int i=0;i<=255;i++) v[i]=3-v[i]; } int a=0; for(int i=0;i<N;i++) { int b=0; int p=1; for(int j=a;j<=a+3;j++) { b+=p*v[j]; p*=4; } output(b); a+=4; } }
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