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zoj 1077 Genetic Combinations

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zoj 1077 Genetic Combinations

#include<iostream>#include<algorithm>#include<stdio.h>#include<string.h>using namespace std;enum {    SIZ = 64,    ALP = 20,};int freq[2][4];int up[ALP];int dn[ALP];int num;string ec[SIZ];string co[SIZ];char one[26];char mat[26];int cnt;int genCode(int a[5]){    int b[5] = {a[0],a[1],a[2],a[3],a[4]};    sort(b, b+5);    int r = 0;    for(int i=0; i<5;i++){        r *= 64;        r += b[i];    }    return r;}bool checkFreq(int m[4]){    for (int i=0; i<4; ++i){        if (freq[0][i] != freq[1][m[i]]) return false;    }    return true;}bool check_and_set(char a, char b){    a -= 'A';    if (mat[a] == '?'){        mat[a] = b;        return true;    }    return mat[a] == b;}bool pass(string &a, string &b, int m[4]){    for (int i=0; i<4; ++i){        if (!check_and_set(a[i], b[m[i]])){ return false;        }    }    return true;}void match(int m[4]){    memset(mat, '?', sizeof(mat));    int i;    for (i=0; i<num; ++i){        if (!pass(ec[i], co[i], m)){ return;        }    }    ++cnt;    if (cnt == 1){        memcpy(one, mat, sizeof(one));    } else {        for (i=0; i<26; ++i){ if (one[i] == mat[i])     continue; one[i] = '?';        }    }}void fun(){    int m[4] = {0, 1, 2, 3};    cnt = 0;    do {        if (!checkFreq(m)) continue;        match(m);    } while (next_permutation(m, m+4));}void output(){    int i, j;    int t = 0;    for (i=0; i<4; ++i){        for (j=0; j<5; ++j){ if (j)     printf(" "); printf("%c-%c", 'A'+t, one[t]); ++t;        }        printf("n");    }}char * findMiss(int i, int&n){    n = 0;    i *= 5;    char *p = 0;    for (int j=0; j<5; j++){        if (one[i+j] == '?'){ p = &one[i+j]; ++n;        }    }    return p;}char fakeOne(int i){    i *= 5;    int t = 0;    int b;    for (int j=0; j<5; j++){        if (one[i+j] != '?'){ b = one[i+j] -'a'; t += b % 5; b = b - (b % 5);        }    }    t = 10 - t;    return 'a'+b+t;}void makeup(){    int i, j;    char *p;    for (i=0; i<4; ++i){        p = findMiss(i, j);        if (j == 1){ *p = fakeOne(i);        }    }}int readIn(){    memset(freq, 0, sizeof(freq));    memset(up, 0, sizeof(up));    memset(dn, 0, sizeof(dn));    cin>>num;    if (num <=0) return 0;    int i;    for (i=0; i<num; i++){        cin>>ec[i];        ++up[ec[i][0]-'A'];        ++up[ec[i][1]-'A'];        ++up[ec[i][2]-'A'];        ++up[ec[i][3]-'A'];    }    for (i=0; i<ALP; i++){        freq[0][i] = genCode(&up[i*5]);    }    for (i=0; i<num; i++){        cin>>co[i];        ++dn[co[i][0]-'a'];        ++dn[co[i][1]-'a'];        ++dn[co[i][2]-'a'];        ++dn[co[i][3]-'a'];    }    for (i=0; i<ALP; i++){        freq[1][i] = genCode(&dn[i*5]);    }    return 1;}int main(){    int tst = 1;    while(readIn() > 0){        fun();        printf("Test #%d:n", tst++);        makeup();        output();    }    return 0;}
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