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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#668973 | #9477. Topological Sort | Fei# | WA | 0ms | 3824kb | C++17 | 811b | 2024-10-23 16:52:54 | 2024-10-23 16:52:57 |
Judging History
answer
#include<bits/stdc++.h>
using i64 = long long;
const int mod = 998244353;
i64 ksm (i64 a, i64 b) {
i64 res = 1;
while(b) {
if (b & 1) {
res = res * a % mod;
}
a = a * a % mod;
b >>= 1;
}
return res;
}
void solve() {
i64 n;
std::cin >> n;
std::vector<int> p (n + 1);
i64 sum = n * (n - 1) / 2;
for (int i = 1; i <= n; i++) {
std::cin >> p[i];
if (i > 1) {
if (p[i] < p[i - 1]) {
sum--;
}
}
}
std::cout << ksm(2, sum) << '\n';
}
signed main() {
std::ios::sync_with_stdio(0);
std::cout.tie(0);
std::cin.tie(0);
i64 t = 1;
// std::cin >> t;
while (t--) {
solve();
}
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3580kb
input:
3 1 3 2
output:
4
result:
ok "4"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3816kb
input:
5 1 2 3 4 5
output:
1024
result:
ok "1024"
Test #3:
score: 0
Accepted
time: 0ms
memory: 3824kb
input:
6 4 2 1 5 6 3
output:
4096
result:
ok "4096"
Test #4:
score: -100
Wrong Answer
time: 0ms
memory: 3748kb
input:
492 397 486 227 395 58 452 172 216 130 181 268 482 85 209 365 104 373 90 260 326 252 96 267 106 102 398 441 41 292 314 12 78 242 353 153 424 179 86 299 228 54 390 73 465 396 349 4 10 451 99 342 250 391 6 323 197 159 47 136 473 392 77 125 362 418 255 291 13 238 339 8 28 413 121 384 157 152 23 221 305...
output:
692497022
result:
wrong answer 1st words differ - expected: '73428942', found: '692497022'