#include<stdio.h>
#include<string.h>
int main()
{
	int n;
	int a, b;
	int result;
	char str[20];
	scanf_s("%d", &n);
	getchar();
	int len;
	while(n-->0)
	{
		gets_s(str);
		len = strlen(str);
		a = b = 0;
		if (str[0] >= 'a')
		{
			int i;
			for (i = 2; str[i] != 32; i++)
				a = a * 10 + (str[i] - '0');
			i++;
			for (; i < len; i++)
			{
				b = b * 10 + str[i] - '0';
			}
			switch (str[0])
			{
			case 'a':result = a + b; break;
			case 'b':result = a - b; break;
			case 'c':result = a * b; break;
			}
			if (result < 0)
			{
				result *= -1;
				len++;
			}
			if (result == 0)
				len++;
			else
				while (result)
				{
					result /= 10;
					len++;
				}
			len--;
			if(n!=0)
				switch (str[0])
				{
				case 'a':printf("%d+%d=%d\n%d\n", a, b, a + b, len); break;
				case 'b':printf("%d-%d=%d\n%d\n", a, b, a - b, len); break;
				case 'c':printf("%d*%d=%ld\n%d\n", a, b, a * b, len); break;
				}
			else
				switch (str[0])
				{
				case 'a':printf("%d+%d=%d\n%d", a, b, a + b, len); break;
				case 'b':printf("%d-%d=%d\n%d", a, b, a - b, len); break;
				case 'c':printf("%d*%d=%ld\n%d", a, b, a * b, len); break;
				}

		}
		else
		{
			int i;
			for (i = 0; str[i] != 32; i++)
				a = a * 10 + str[i] - '0';
			i++;
			for (; i < len; i++)
				b = b * 10 + str[i] - '0';
			int result = a + b;
			if (result < 0)
			{
				result *= -1;
				len++;
			}
			if (result == 0)
				len++;
			else
				while (result)
				{
					result /= 10;
					len++;
				}
			len++;
			if (n != 0)
				printf("%d+%d=%d\n%d\n", a, b, a + b, len);
			else
				printf("%d+%d=%d\n%d", a, b, a + b, len);
		}
	}
	return 0;
}

（用的vs编译器所以用了scanf_s和gets_s）,开了o2优化会发生wa和re的神奇转换