ModAdd

input/code.cpp: In function 'int main()':
input/code.cpp:12:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if(a.length() != l) {
                   ^
input/code.cpp:13:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<l-a.length()+1;i++) a = "0" + a;
                              ^
input/code.cpp:15:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if(b.length() != l) {
                   ^
input/code.cpp:16:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<l-b.length()+1;i++) b = "0" + b;
                              ^

#include <bits/stdc++.h>

#define ll long long
#define vi vector<int>

using namespace std;

int main() {
	string a, b;
	cin >> a >> b;
	int l = max(a.length(), b.length());
	if(a.length() != l) {
		for(int i=0;i<l-a.length()+1;i++) a = "0" + a;
	}
	if(b.length() != l) {
		for(int i=0;i<l-b.length()+1;i++) b = "0" + b;
	}
	string res = "";
	for(int i=0;i<l;i++) {
		int va = a[i]-'0';
		int vb = b[i]-'0';
		res += to_string((va+vb)%10);
	}
	int s = 0;
	while(res[s] == '0') s++;
	for(;s<l;s++) cout << res[s];
	cout << endl;
	return 0;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: TIME LIMIT EXCEEDED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: TIME LIMIT EXCEEDED

Test 5

Verdict: TIME LIMIT EXCEEDED

Test 6

Verdict: TIME LIMIT EXCEEDED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: WRONG ANSWER

Test 9

Verdict: TIME LIMIT EXCEEDED

Test 10

Verdict: TIME LIMIT EXCEEDED