/**//*
ID: lorelei3
TASK: preface
LANG: C
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
static char *encode[] = 
{
"", "I", "II", "III", "IV",
"V", "VI", "VII", "VIII", "IX",
};
char*
romandigit(int d, char *ivx)
{
char *s, *p;
static char str[10];
for(s=encode[d%10], p=str; *s; s++, p++) {
switch(*s){
case 'I':
*p = ivx[0];
break;
case 'V':
*p = ivx[1];
break;
case 'X':
*p = ivx[2];
break;
}
}
*p = '\0';
return str;
}
char*
roman(int n)
{
static char buf[20];
strcpy(buf, "");
strcat(buf, romandigit(n/1000, "M"));
strcat(buf, romandigit(n/100, "CDM"));
strcat(buf, romandigit(n/10, "XLC"));
strcat(buf, romandigit(n, "IVX"));
return buf;
}
int
main(void)
{
FILE *fin, *fout;
int i, n;
char *s;
int count[256];
fin = fopen("preface.in", "r");
fout = fopen("preface.out", "w");
assert(fin != NULL && fout != NULL);
fscanf(fin, "%d", &n);
for(s="IVXLCDM"; *s; s++)
count[*s] = 0;
for(i=1; i<=n; i++)
for(s=roman(i); *s; s++)
count[*s]++;
for(s="IVXLCDM"; *s; s++)
if(count[*s])
fprintf(fout, "%c %d\n", *s, count[*s]);
return 0;
}posted on 2010-11-21 00:47
小阮 阅读(152)
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