Submission #4024184

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Source Code Expand

#include<stdio.h>
#include<stdlib.h>
#include<iostream>
#include<algorithm>
#include<cstdio>
#include<string>
#include<cmath>
#include<vector>
#include<stack>
#include<queue>
#include<time.h>
#include<set>
#include<map>
#define FOR(i,a,b) for(int i=a;i<b;i++)
#define REP(i,a,b) for(int i=a;i>b;i--)
#define vint vector<int> 
#define vvint vector<vint>
#define ct(a) cout<<a<<endl
#define tget(a,b) get<a>(b)
using namespace std;
typedef long long ll;
const ll INF = 1e17;
const int MOD = 1e9 + 7;

int a, b;

int main(void) {
	cin >> a >> b;
	if (a + b >= 10)ct("error");
	else ct(a + b);
	return 0;
}

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