Submission #17121

#	Time	Username	Problem	Language	Result	Execution time	Memory
17121		murat	Parrots (IOI11_parrots)	C++98	17 / 100	12 ms	2400 KiB

encoder

#include "encoder.h"
#include "encoderlib.h"
#include<bits/stdc++.h>

using namespace std;

void encode(int N, int M[]) {

    int c = 0, t;
    vector< int > v[5];
    int P[500] = {0};
    int cc[500] = {0};

    for(int i=0; i<N; i++) {
        int tt  = M[i];
        for(int j = 0; j < 8; j+=2) {
            P[c] = (tt >> (6-j)) & 3;
            cc[P[c]]++;
            c++;
        }
    }

    int mx = max(max(cc[0], cc[1]), max(cc[2], cc[3]));

    if(0 || mx == cc[0])      { t = 0; send(0); send(0); send(0); send(0); }
    else if(mx == cc[1]) { t = 1; send(1); send(1); send(1); send(1); }
    else if(mx == cc[2]) { t = 2; send(2); send(2); send(2); send(2); }
    else if(mx == cc[3]) { t = 3; send(3); send(3); send(3); send(3); }

    for(int i = 0; i < c; i++) {
        if(P[i] == t) P[i] = 0;
        if(P[i] < t) P[i]++;
        while(P[i]--) {
            send(i);
        }
    }
}

decoder

#include "decoder.h"
#include "decoderlib.h"
#include<bits/stdc++.h>

using namespace std;

void decode(int N, int L, int X[]) {

    int cc[500] = {0}, t = 0;

    for(int i=0; i<L; i++) cc[X[i]]++;

    if(0 || cc[0] > 3) { cc[0] -= 4; t = 0;}
    else if(cc[1] > 3) { cc[1] -= 4; t = 1;}
    else if(cc[2] > 3) { cc[2] -= 4; t = 2;}
    else if(cc[3] > 3) { cc[3] -= 4; t = 3;}

    for(int i = 0; i < N * 4; i++) {
        if(cc[i] == 0) cc[i] = t;
        else if(cc[i] <= t) cc[i]--;
        if(i % 4 == 3) {
            int t = 64 * cc[i-3] + 16 * cc[i-2] + 4 * cc[i-1] + cc[i];
            output(t);
        }
    }  
}

Compilation message (stderr)

encoder.cpp: In function 'void encode(int, int*)':
encoder.cpp:32:9: warning: 't' may be used uninitialized in this function [-Wmaybe-uninitialized]
         if(P[i] < t) P[i]++;
         ^~

• Subtask 1: 17 / 17
• Subtask 2: 0 / 17
• Subtask 3: 0 / 18
• Subtask 4: 0 / 29
• Subtask 5: 0 / 19