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poj 2849 brainf*ck

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poj 2849 brainf*ck

#include <map>#include <set>#include <list>#include <cmath>#include <ctime>#include <deque>#include <queue>#include <stack>#include <bitset>#include <cctype>#include <cstdio>#include <string>#include <vector>#include <cassert>#include <cstdlib>#include <cstring>#include <fstream>#include <iomanip>#include <numeric>#include <sstream>#include <utility>#include <iostream>#include <algorithm>#include <stdexcept>#include <functional>using namespace std;#define rep(i,n) for(int i=0;i<(n);i++)#define MAX 32767int c;int bf[150000];char t[150000];int jump[150000];int po[32767];stack<int> cycle;void compile(){    while (!cycle.empty()) cycle.pop();    memset(po, 0, sizeof(po));    memset(jump, 0, sizeof(jump));    int n = c;    int p = 0;    rep(c, n)    {        if (bf[c] == '[') cycle.push(c);        if (bf[c] == ']')        { if (cycle.empty() == true) {     printf("COMPILE ERROR");     return ; } int t = cycle.top(); cycle.pop(); jump[c] = t; jump[t] = c;        }    }    if (cycle.empty() == false)    {        printf("COMPILE ERROR");        return ;    }    rep(c, n)    {        if (bf[c] == '+')        { po[p]++; po[p] &= 255;        }        if (bf[c] == '-')        { po[p] += 255; po[p] &= 255;        }        if (bf[c] == '>')        { p++; p &= MAX;        }        if (bf[c] == '<')        { p += MAX; p &= MAX;        }        if (bf[c] == '.')        { putchar((unsigned char)(po[p]));        }        if (bf[c] == '[')        { if (po[p] == 0) {     c = jump[c]; }        }        if (bf[c] == ']')        { if (po[p] != 0)     c = jump[c];        }    }    return ;}int main(){    int T;    scanf("%d", &T);    rep(cases, T)    {        c = 0;        while (1)        { gets(t); if (strcmp(t, "end") == false) {     printf("PROGRAM #%d:n", cases + 1);     compile();     printf("n");     break; } int len = strlen(t); rep(i, len) {     if (t[i] == '%') break;     if (t[i] == '+' || t[i] == '-' || t[i] == '>' || t[i] == '<' || t[i] == '.' || t[i] == '[' || t[i] == ']')         bf[c++] = t[i]; }        }    }}
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