题解

不想说啥，模板题

#include <bits/stdc++.h>
using namespace std;

void zh(string s, int a[]) {
	int n = s.size();
	reverse(s.begin(), s.end());
	for (int i = 0; i < n; i++) {
		a[i] = s[i] - '0';
	}
}
int a[2000], b[2000], c[2000];

int main() {
	string s1, s2;
	int la, lb, lc;
	cin >> s1 >> s2;
	zh(s1, a);
	zh(s2, b);
	la = s1.size();
	lb = s2.size();
	lc = max(la, lb);
	for (int i = 0; i < lc; i++)
		c[i] = a[i] + b[i];
	int jw = 0;
	for (int i = 0; i < lc; i++) {
		c[i] = c[i] + jw;
		jw = c[i] / 10;
		c[i] = c[i] % 10;
	}
	if (jw) {
		c[lc] = jw;
		lc++;
	}

	for (int i = lc - 1; i >= 0; i--)
		cout << c[i];
	return 0;
}