Submission #1780887

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Source Code Expand

#include <cstdio>
#include <cmath>
#include <cstring>
#include <numeric>
#include <algorithm>
#include <vector>
#include <stack>
#include <queue>
#include <deque>
#include <map>
#include <utility>
#include <string>

using namespace std;

typedef long long ll;
typedef unsigned int uint;
typedef unsigned long long ull;
typedef pair<int, int> pii;
typedef pair<ll, int> pli;

const int iinf = 1 << 29;
const long long linf = 1ll << 61;

#define modp(x, y) (((y) + (x) % (y)) % (y))

struct st
{
	int a, b, c;
};

int N, L;
char S[2][53];

int M;
st domino[30];

int main(int argc, char* argv[])
{
	scanf("%d", &N);
	scanf("%s", S[0]);
	scanf("%s", S[1]);
	L = strlen(S[0]);

	int bef = -1;
	ll ans;
	for(int i = 0; i < L; i++)
	{
		if(S[0][i] == S[1][i])
		{
			if(bef == 0)
			{
				ans *= 2;
			}
			else if(bef == -1)
			{
				ans = 3;
			}
			bef = 0;
		}
		else
		{
			if(bef == 0) 
			{
				ans *= 2;
			}
			else if(bef == -1)
			{
				ans = 6;
			}
			else
			{
				ans *= 3;
			}
			bef = 1;
			i++;
		}
		ans %= 1000000007;
	}
	printf("%lld\n", ans);

	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main(int, char**)’:
./Main.cpp:40:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
                 ^
./Main.cpp:41:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s", S[0]);
                   ^
./Main.cpp:42:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s", S[1]);
                   ^

Judge Result