typedef unsigned char byte;
typedef unsigned short u16;
typedef unsigned int u32;
typedef unsigned long long u64;



typedef struct {
    u32 A,B,C,D;
    u32 nblocks;
    byte buf[64];
    int count;
} MD5_CONTEXT;



static void
transform( MD5_CONTEXT *ctx, byte *data )
{
    u32 correct_words[16];
    u32 A = ctx->A;
    u32 B = ctx->B;
    u32 C = ctx->C;
    u32 D = ctx->D;
    u32 *cwp = correct_words;


    { int i;
      byte *p2, *p1;
      for(i=0, p1=data, p2=(byte*)correct_words; i < 16; i++, p2 += 4 ) {
        p2[3] = *p1++;
        p2[2] = *p1++;
        p2[1] = *p1++;
        p2[0] = *p1++;
      }
    }
    do { A += (D ^ (B & (C ^ D))) + (*cwp++) + 0xd76aa478; A = ( ((A) << (7)) | ((A) >> (32-(7))) ); A += B; } while (0);
    do { D += (C ^ (A & (B ^ C))) + (*cwp++) + 0xe8c7b756; D = ( ((D) << (12)) | ((D) >> (32-(12))) ); D += A; } while (0);
    do { C += (B ^ (D & (A ^ B))) + (*cwp++) + 0x242070db; C = ( ((C) << (17)) | ((C) >> (32-(17))) ); C += D; } while (0);
    do { B += (A ^ (C & (D ^ A))) + (*cwp++) + 0xc1bdceee; B = ( ((B) << (22)) | ((B) >> (32-(22))) ); B += C; } while (0);
    do { A += (D ^ (B & (C ^ D))) + (*cwp++) + 0xf57c0faf; A = ( ((A) << (7)) | ((A) >> (32-(7))) ); A += B; } while (0);
    do { D += (C ^ (A & (B ^ C))) + (*cwp++) + 0x4787c62a; D = ( ((D) << (12)) | ((D) >> (32-(12))) ); D += A; } while (0);
    do { C += (B ^ (D & (A ^ B))) + (*cwp++) + 0xa8304613; C = ( ((C) << (17)) | ((C) >> (32-(17))) ); C += D; } while (0);
    do { B += (A ^ (C & (D ^ A))) + (*cwp++) + 0xfd469501; B = ( ((B) << (22)) | ((B) >> (32-(22))) ); B += C; } while (0);
    do { A += (D ^ (B & (C ^ D))) + (*cwp++) + 0x698098d8; A = ( ((A) << (7)) | ((A) >> (32-(7))) ); A += B; } while (0);
    do { D += (C ^ (A & (B ^ C))) + (*cwp++) + 0x8b44f7af; D = ( ((D) << (12)) | ((D) >> (32-(12))) ); D += A; } while (0);
    do { C += (B ^ (D & (A ^ B))) + (*cwp++) + 0xffff5bb1; C = ( ((C) << (17)) | ((C) >> (32-(17))) ); C += D; } while (0);
    do { B += (A ^ (C & (D ^ A))) + (*cwp++) + 0x895cd7be; B = ( ((B) << (22)) | ((B) >> (32-(22))) ); B += C; } while (0);
    do { A += (D ^ (B & (C ^ D))) + (*cwp++) + 0x6b901122; A = ( ((A) << (7)) | ((A) >> (32-(7))) ); A += B; } while (0);
    do { D += (C ^ (A & (B ^ C))) + (*cwp++) + 0xfd987193; D = ( ((D) << (12)) | ((D) >> (32-(12))) ); D += A; } while (0);
    do { C += (B ^ (D & (A ^ B))) + (*cwp++) + 0xa679438e; C = ( ((C) << (17)) | ((C) >> (32-(17))) ); C += D; } while (0);
    do { B += (A ^ (C & (D ^ A))) + (*cwp++) + 0x49b40821; B = ( ((B) << (22)) | ((B) >> (32-(22))) ); B += C; } while (0);


    ctx->A += A;
    ctx->B += B;
    ctx->C += C;
    ctx->D += D;
}