第10个样例RE了

#include<bits/stdc++.h>
using namespace std;
//a是数字栈，b是符号栈，c是答案队列
stack<int> op, ed;
stack<char> b;
queue<char> c, q;
int qmi(int a, int b) {
	int res = 1;
	while(b) {
		if(b & 1) res = res * a;
		a *= a;
		b >>= 1;
	}
	return res;
}

int main()
{
	string s;
	cin >> s;
	int len = s.size();
	for(int i = 0;i < len;i++) {
        //6级运算级
		if(s[i] >= '0' && s[i] <= '9') {
			c.push(s[i]);
		}
        //5级运算级
		else if(s[i] == '+' || s[i] == '-') {
			while(b.size()) {
				auto t = b.top();
				if(t == '(') break;
				b.pop();
				c.push(t);
			}
			b.push(s[i]);
		}
		//4级运算级
		else if(s[i] == '*' || s[i] == '/') {
			while(b.size()) {
				auto t = b.top();
				if(t == '+' || t == '-' || t == '(') break;
				b.pop();
				c.push(t); 
			}
			b.push(s[i]);
		}
		//3级运算级
		else if(s[i] == '^') {
			c.push(s[i + 1]);
			while(b.size()) {
				auto t = b.top();
				if(t != '^') break;
				b.pop();
				c.push(t);
			}
			b.push(s[i]);
			i++;
		}
		//2级运算级
		else if(s[i] == '(') b.push(s[i]);
		//1级运算级
		else {
			while(b.size()) {
				auto t = b.top();
				b.pop();
				if(t == '(') break;
				c.push(t);
			}
		}
	}
	while(b.size()) {
		auto t = b.top();
		b.pop();
		c.push(t);
	}
	while(c.size()) {
		auto t = c.front();
		c.pop();
		q.push(t);
		cout << t << ' ';
	}
	cout << '\n';
	while(q.size()) {
		c.push(q.front());
		q.pop();
	}
	while(c.size()) {
		auto t = c.front();
		c.pop();
		if(t >= '0' && t <= '9') op.push(t - '0');
		else {
			int x = op.top();
			op.pop();
			int y = op.top();
			op.pop();
			if(t == '+') op.push(y + x);
			if(t == '-') op.push(y - x);
			if(t == '*') op.push(y * x);
			if(t == '/') op.push(y / x);
			if(t == '^') op.push(qmi(y, x));
			//输出左边数字
			while(op.size()) {
				ed.push(op.top());
				op.pop();
			}
			while(ed.size()) {
				auto t = ed.top();
				ed.pop();
				op.push(t);
				cout << t << ' ';
			}
			//输出右边
			while(c.size()) {
				auto t = c.front();
				c.pop();
				q.push(t);
				cout << t << ' ';
			}
			cout << '\n';
			while(q.size()) {
				c.push(q.front());
				q.pop();
			}
		}
	}
	return 0;
}