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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#203617 | #6957. Do You Like Interactive Problems? | Royo# | AC ✓ | 1ms | 3504kb | C++20 | 994b | 2023-10-06 18:42:26 | 2023-10-06 18:42:26 |
Judging History
answer
#include <bits/stdc++.h>
#include <cstdio>
#define int long long
#define PII pair<int, int>
#pragma GCC optimize("Ofast")
#define NO {puts("No") ; return ;}
#define YES {puts("Yes") ; return ;}
#define pb push_back
#define endl "\n"
#define fi first
#define se second
#define IOS std::ios::sync_with_stdio(false), cin.tie(0), cout.tie(0);
using namespace std;
mt19937 rd(time(0));
const int N = 1e5 + 10, mod = 998244353;
long long qmi(int a, int b, int p) {
long long res = 1;
while (b) {
if (b & 1) res = res * a % p;
a = a * (long long)a % p;
b >>= 1;
}
return res;
}
long long inv(long long a, long long mod) {
return qmi(a, mod - 2, mod);
}
void solve() {
int n;
cin >> n;
if (n == 1)
{
cout << 0 << endl;
return;
}
cout << (2 * n - 1) * qmi(3, mod - 2, mod) % mod << endl;
}
signed main() {
IOS;
int t; cin >> t;
while (t -- )
solve();
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 3504kb
input:
100 251608761 33782011 325968940 486286497 999999993 575267221 8 928380304 123861349 739740016 999999991 31193142 9 999999996 705831120 162816569 293889735 644068367 999999992 1 323447272 387107234 6 214616549 755303220 699413097 499430423 151674815 999999998 46590460 2486352 926437790 248790470 100...
output:
833235409 355269458 550060744 989687233 333918544 716259598 5 951668320 415322350 825908128 1170425 686291663 665496241 333918546 137805962 108544379 861422725 429378911 666666661 0 548379632 258071489 665496239 143077699 170787362 133527280 332953615 101116543 666666665 363808424 667153803 61762519...
result:
ok 100 lines