我把你的代码稍微改动了一下，用C语言完成通过了。

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#define MAXS 10000000
int n, leno, flag, book[MAXS] = { 0 }, t[500] = { 0 };
char line[20] = { 0 }, ch;
char numstr[20];
int index;
void Input()
{
	int i, Tel, counter;
	for (i = 0; i <= 9; i++)	t[i + 48] = i;
	t['A'] = t['B'] = t['C'] = 2;
	t['D'] = t['E'] = t['F'] = 3;
	t['G'] = t['H'] = t['I'] = 4;
	t['J'] = t['K'] = t['L'] = 5;
	t['M'] = t['N'] = t['O'] = 6;
	t['P'] = t['R'] = t['S'] = 7;
	t['T'] = t['U'] = t['V'] = 8;
	t['W'] = t['X'] = t['Y'] = 9;
	scanf("%d", &n);
	flag = leno = 0;
	for (i = 0; i < n; i++)
	{
		counter = 0;
		index = 0;
		scanf("%s", numstr);
		for (counter = Tel = 0; counter < 7; counter++)
		{
			ch=numstr[index];
			index++;
			if (ch == '-' || ch == 'Q' || ch == 'Z') {
				counter--;
				continue;
			}
			Tel = Tel * 10 + t[ch];
		}
		if (Tel > MAXS) {		// 异常值保护模块
			printf("ALERT\n");
			system("pause");
		}
		flag += (book[Tel] == 0);
		//	book[]： Tel 的 frequency，outlist[]堆栈，有值
		book[Tel]++;
	}
}
void FormOut(int a)
{
	int i;
	for (i = 1000000; i >= 10000; i /= 10)
		printf("%d", (a % (i * 10)) / i);
	printf("-");
	for (; i > 1; i /= 10)
		printf("%d", (a % (i * 10)) / i);
	printf("%d %d\n", a % 10, book[a]);
}
void Output()
{
	int i;
	if (flag == n) {
		printf("No duplicates.\n");
		return;
	}
	for (i = 0; i < MAXS; i++)
		if (book[i]>1)
			FormOut(i);
	//printf("%d-%d %d\n", outlist[i]/10000, outlist[i]%10000, book[outlist[i]]);
}

int main()
{
	Input();
	//qsort(outlist, leno, sizeof(outlist[0]), cmp);
	//test();

	Output();
	system("pause");
	return 0;
}