Submission #1813615

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Source Code Expand

#include <cstdio>
int n, a[100005];
char s[100005];
int main() {
	int i, j;
	freopen("input.txt", "r", stdin);
	scanf("%d%s", &n, s);
	s[n]=s[0];
	for(i=0; i<4; i++) {
		a[0] = i%2, a[1] = i/2%2;
		for(j=2; j<n+2; j++) a[j] = a[j-1] ^ a[j-2] ^ s[j-1]=='x';
		if(a[0]==a[n] && a[1]==a[n+1]) {
			for(j=0; j<n; j++) putchar(a[j] ? 'W':'S');
			return 0;
		}
	}
	puts("-1");
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:6:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]
  freopen("input.txt", "r", stdin);
                                  ^
./Main.cpp:7:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%s", &n, s);
                      ^

Judge Result