QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#113863 | #5547. Short Function | PetroTarnavskyi | WA | 1ms | 3536kb | C++17 | 2.1kb | 2023-06-19 19:32:37 | 2023-06-19 19:32:40 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define SZ(a) (int)a.size()
#define ALL(a) a.begin(), a.end()
#define FOR(i, a, b) for (int i = (a); i<(b); ++i)
#define RFOR(i, b, a) for (int i = (b)-1; i>=(a); --i)
#define MP make_pair
#define PB push_back
#define F first
#define S second
typedef long long LL;
typedef pair<int, int> PII;
typedef vector<int> VI;
const int mod = 998244353;
int add(int a, int b){
return (a + b > mod) ? (a + b - mod) : (a + b);
}
int sub(int a, int b){
return (a - b < 0) ? (a - b + mod) : (a - b);
}
int mult(int a, int b){
return 1LL* a * b % mod;
}
int binpow(int a, int n){
int res = 1;
while(n){
if(n & 1)
res = mult(res, a);
a = mult(a, a);
n /= 2;
}
return res;
}
int inv(int x)
{
return binpow(x, mod - 2);
}
int sub2(int a, int b, int md){
return (a + md - b) % md;
}
int mult2(int a, int b, int md){
return 1ll * a * b % md;
}
int binpow2(int a, int k, int md){
int res = 1;
while(k){
if(k & 1)
res = mult2(res, a, md);
a = mult2(a, a, md);
k /= 2;
}
return res;
}
int inv2(int a, int md){
int val = md;
int x = md;
for(int p = 2; p * p <= x; p++)
if(x % p == 0){
val -= val / p;
while(x % p == 0)
x /= p;
}
if(x != 1)
val -= val / x;
return binpow2(a, val - 1, md);
}
int main()
{
ios::sync_with_stdio(false);
cin.tie(0);
int n, k;
cin >> n >> k;
VI a(n);
FOR (i, 0, n) cin >> a[i];
VI pr(n + 1, 1);
VI ipr(n + 1, 1);
FOR (i, 0, n)
{
pr[i + 1] = mult(pr[i], a[i]);
ipr[i + 1] = inv(pr[i + 1]);
}
int all = pr[n];
int pos = binpow2(2, k, n);
int cnt = mult2(sub2(binpow2(2, k, mod - 1), pos, mod - 1), inv2(n, mod - 1), mod - 1);
int pachka = binpow(all, cnt);
FOR (i, 0, n)
{
//[i, pos)
int res = pachka;
if(pos < i){
int cur = pr[pos];
cur = mult(cur, mult(all, ipr[i]));
res = mult(res, cur);
}else{
res = mult(res, mult(pr[pos], ipr[i]));
}
cout << res << " ";
pos = (pos + 1) % n;
}
cout << endl;
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 3536kb
input:
5 2 1 2 3 4 5
output:
24 120 60 40 30
result:
ok 5 number(s): "24 120 60 40 30"
Test #2:
score: -100
Wrong Answer
time: 0ms
memory: 3432kb
input:
8 3 12 5 16 14 10 6 9 2
output:
395868439 395868439 395868439 395868439 395868439 395868439 395868439 395868439
result:
wrong answer 1st numbers differ - expected: '14515200', found: '395868439'