Submission #1499588

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
const int N = 1e5+5;
char s[N];
bool a[N];
int n;

int main() {	
	scanf("%d%s",&n,s);
	for(int i = 0; i < 4; ++i) {
		a[0] = i&1, a[1] = (i&2)>>1;
		for(int j = 2; j < n; ++j) {
			a[j] = a[j-2];
			if(a[j-1] ^ (s[j-1] == 'x')) a[j] ^= 1;
		}
		if((a[1] == a[n-1]) != ((s[0] == 'o')^a[0])) continue;
		if((a[0] == a[n-2]) != ((s[n-1] == 'o')^a[n-1])) continue;
		for(int i = 0; i < n; ++i) {
			if(a[i]) printf("W");
			else printf("S");
		}
		printf("\n");
		return 0;
	}
	printf("-1\n");
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:9:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%s",&n,s);
                    ^

Judge Result