Submission #857392

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Source Code Expand

#include<cstdio>
#include<cstring>
#include<cmath>
#include<set>
#include<map>
#include<queue>
#include<vector>
#include<algorithm>
#include<iostream>
#include<string>
#include<assert.h>
#include<sstream>
using namespace std;
#define pb push_back
#define mp make_pair
#define sz(x) ((int)(x).size())
#define rep(i,l,r) for(int i=(l);i<(r);++i)
#define setIO(x) freopen(x".in","r",stdin);freopen(x".out","w",stdout);
typedef long long ll;
typedef pair<int, int> pii;
const ll LINF = 1e18 + 7;
const int N = 5e5 + 7;
const int INF = 1e9 + 7;
const int MOD = 1e9 + 7;
const double EPS = 1e-8;
//-------------head-------------
int n, p[N], f[N];
char w[N];
void kmp(int n, char s[]) {
	p[0] = -1;
	for (int i = 1, j = -1; i < n; ++i) {
		while (j >= 0 && s[j + 1] != s[i])
			j = p[j];
		j += s[j + 1] == s[i];
		p[i] = j;
	}
}
int main() {
	scanf(" %s", w);
	n = strlen(w);
	kmp(n, w);
	int L = n - 1 - p[n - 1];
	if (L == 1) {
		printf("%d\n1\n", n);
	} else if (L == n || n % L != 0) {
		printf("1\n1\n");
	} else {
		rep(i, 0, n - 1)
			f[i] = (p[i] == -1 || (i + 1) % (i - p[i]) != 0);
		reverse(w, w + n);
		kmp(n, w);
		int ans = 0;
		rep(i, 0, n)
			if ((p[i] == -1 || (i + 1) % (i - p[i]) != 0)
					&& (i == n - 1 || f[n - 2 - i]))
				++ans;
		printf("2\n%d\n", ans);
	}
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:39:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf(" %s", w);
                 ^

Judge Result