Submission #8898289

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Source Code Expand

#include <bits/stdc++.h>
#define ls (o << 1)
#define rs (o << 1 | 1)
#define mid ((L + R) >> 1)
using namespace std;
typedef long long LL;
const int N = 105;
const int mod = 1e9 + 7;
char s[2][N];
int n;
int main() {
#ifdef TEST
	freopen("input.txt", "r", stdin);
#endif
	scanf("%d%s%s", &n, s[0], s[1]);
	LL ans = 6 - 3 * (s[0][0] == s[1][0]);
	// cout << ans << endl;
	for (int i = 1; i < n; ++i) {
		if (s[0][i] == s[1][i]) {
			ans *= (2 - (s[0][i - 1] != s[1][i - 1]));
		} else if (s[0][i] != s[0][i - 1] && s[1][i] != s[1][i - 1]) {
			ans *= (3 - (s[0][i - 1] == s[1][i - 1]));
		}
		while (ans >= mod) ans -= mod;
	}
	cout << ans << endl;
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:15:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%s%s", &n, s[0], s[1]);
                                 ^

Judge Result