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ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#332340 | #7877. Balanced Array | Terdy | WA | 1ms | 7564kb | C++14 | 1.3kb | 2024-02-19 14:36:46 | 2024-02-19 14:36:47 |
Judging History
answer
# include <bits/stdc++.h>
using namespace std;
# define ull unsigned long long
const int N = 2e6 + 5 , base = 233 , mod = 1e9 + 7;
int n , a[N] , ans[N];
int ha[N] , pw[N*9];
int trans(string s)
{
int res = 0;
for(int i = 0; i < s.length(); i++)
{
if('0' <= s[i] && s[i] <= '9') res = res * 62 + s[i] - '0';
if('a' <= s[i] && s[i] <= 'z') res = res * 62 + s[i] - 'a' + 10;
if('A' <= s[i] && s[i] <= 'Z') res = res * 62 + s[i] - 'A' + 10 + 26;
}
return res;
}
ull Ha(int l , int r)
{
return ha[r] - ha[l - 1] * pw[r - l + 1];
}
bool check(int k , int l)
{
cout << Ha(1 , l - 2 * k) + Ha(2 * k + 1 , l) << ' ' << 2 * Ha(k + 1 , l - k) << '\n';
return Ha(1 , l - 2 * k) + Ha(2 * k + 1 , l) == 2 * Ha(k + 1 , l - k);
}
int main()
{
cin >> n;
pw[0] = 1;
for(int i = 1; i <= 9 * n; i++) pw[i] = pw[i - 1] * base;
for(int i = 1; i <= n; i++)
{
string s;
cin >> s;
a[i] = trans(s);
ha[i] = ha[i - 1] * base + a[i];
}
for(int i = 1 , j = 1; i <= (n - 1) / 2 && j <= n; i++)
{
while(i > (j - 1) / 2) j++;
while(check(i , j) && j <= n) ans[j] = 1 , j++;
}
for(int i = 1; i <= n; i++) cout << ans[i];
return 0;
}
Details
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Test #1:
score: 0
Wrong Answer
time: 1ms
memory: 7564kb
input:
3 1 2 3
output:
4 4 18446744073696793936 938 001
result:
wrong answer 1st lines differ - expected: '001', found: '4 4'