#include <stdio.h>

int roll(int n);

#define  MAXN   10000

int main(int argc,char **argv) {
	int    bins[MAXN+1];
	int    n,       nthrow,   echo;
	int    nbins,   i,        val;
   double expected;

	if( argc < 3 || argc > 4 ) goto Usage;
	if( sscanf(argv[1],"%d",&n) != 1 || n > MAXN ||
       sscanf(argv[2],"%d",&nthrow) != 1 ) goto Usage;
	echo = (argc > 3);

   nbins = n + 1;
	for( i = 0;  i < nbins; i++ ) bins[i] = 0;

	for( i = 0;  i < nthrow; i++ ) {
		val = roll(n);
		++bins[val];
		if( echo ) printf("%d\n",val);
	}
   expected = (double) nthrow / nbins;
	printf("Frequency counts\n");
	for( i = 0; i < nbins; i++ ) {
		printf("%3d: %5d (%.1f%%)\n",i,bins[i],
             100.0 * (bins[i] - expected) / expected);
	}

	exit(0);
Usage:
	fprintf(stderr,"usage: troll <n> <nthrow> [<echo>]\n");
	exit(1);
}