#include <bits/stdc++.h>
using i64 = long long;
/**
* Description: Modular arithmetic operations basic
* Source: MisterReaper
* KACTL:
* Not.
*/
constexpr int MOD = 1E9 + 7;
constexpr int PRIME = 37;
int mul(int a, int b) {
return (1LL * a * b) % MOD;
}
int add(int a, int b) {
return (a + b) % MOD;
}
int sub(int a, int b) {
return add(a, MOD - b);
}
int expo(int a, int b) {
int res = 1;
while(b) {
if(b & 1) {
res = mul(res, a);
}
a = mul(a, a);
b >>= 1;
}
return res;
}
int inv(int a) {
return expo(a, MOD - 2);
}
int divide(int a, int b) {
return mul(a, inv(b));
}
#define ONLINE_JUDGE
void solve() {
std::string s;
std::cin >> s;
int n = s.size();
s = '$' + s;
std::vector<int> hash(n + 1);
int ans = 0, l = 1, r = n;
while(true) {
//std::cerr << l << " " << r << "\n";
int h1 = 0, h2 = 0, len = 0;
while(l < r) {
h1 = add(mul(h1, PRIME), s[l] - 'a' + 1);
h2 = add(h2, mul(s[r] - 'a' + 1, expo(PRIME, len)));
if(h1 == h2) {
break;
}
l++;
r--;
len++;
}
if(h1 == h2) {
ans += 2;
if(l == r) {
ans--;
break;
}
}
l++;
r--;
if(l > r) {
ans++;
break;
}
}
std::cout << ans << "\n";
return;
}
signed main() {
#ifndef ONLINE_JUDGE
freopen("in.txt", "r", stdin);
freopen("out.txt", "w", stdout);
#endif
std::ios_base::sync_with_stdio(false);
std::cin.tie(NULL); std::cout.tie(NULL);
int t = 1; std::cin >> t;
for(int i = 1; i <= t; i++) {
solve();
}
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
