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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#665486 | #9477. Topological Sort | ucup-team5217# | WA | 0ms | 3700kb | C++23 | 711b | 2024-10-22 13:28:46 | 2024-10-22 13:28:47 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define maxn 200005
#define mod 998244353
int a[maxn];
int64_t qpow(int64_t a, int64_t x) {
int64_t ans = 1;
while (x) {
if (x & 1) ans = ans * a % mod;
a = a * a % mod, x >>= 1;
}
return ans;
}
void solve(void) {
int n;
cin >> n;
int64_t ans = n * (n - 1) / 2;
for (int i = 1, maxv = 0; i <= n; i++) {
cin >> a[i];
if (a[i] < maxv) ans--;
maxv = max(maxv, a[i]);
}
cout << qpow(2, ans % (mod - 1)) << endl;
return;
}
int main() {
ios::sync_with_stdio(false), cin.tie(nullptr);
int _ = 1;
while (_--) solve();
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 0ms
memory: 3508kb
input:
3 1 3 2
output:
4
result:
ok "4"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3636kb
input:
5 1 2 3 4 5
output:
1024
result:
ok "1024"
Test #3:
score: 0
Accepted
time: 0ms
memory: 3700kb
input:
6 4 2 1 5 6 3
output:
4096
result:
ok "4096"
Test #4:
score: -100
Wrong Answer
time: 0ms
memory: 3640kb
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:
390557336
result:
wrong answer 1st words differ - expected: '73428942', found: '390557336'