Submission #1492075

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Source Code Expand

#include <algorithm>
#include <cmath>
#include <iomanip>
#include <iostream>
#include <string>
#include <utility>
#include <vector>

using namespace std;

void tri(int x) {}

int main() {
  string s;
  cin >> s;
  if (s == "a") {
    cout << -1 << endl;
  } else if (s == "b") {
    cout << "a" << endl;
  } else {
    cout << "b" << endl;
  }
  return 0;
}

Submission Info

Judge Result