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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 |
---|---|---|---|---|---|---|---|---|---|
#250544 | #7562. Except One | KKT89 | AC ✓ | 1ms | 3552kb | C++17 | 1.8kb | 2023-11-13 12:21:45 | 2023-11-13 12:21:45 |
Judging History
answer
#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef unsigned long long int ull;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll myRand(ll B) {
return (ull)rng() % B;
}
inline double time() {
return static_cast<long double>(chrono::duration_cast<chrono::nanoseconds>(chrono::steady_clock::now().time_since_epoch()).count()) * 1e-9;
}
long long modpow(long long a, long long n, long long mod) {
long long res = 1;
while (n > 0) {
if (n & 1) res = res * a % mod;
a = a * a % mod;
n >>= 1;
}
return res;
}
int main(){
cin.tie(nullptr);
ios::sync_with_stdio(false);
// vector<int> primes = {2, 3, 5, 7, 11};
// for (int p : primes) {
// for (int k = 1; k <= p-1; ++k) {
// for (int t = 1; t <= p-2; ++t) {
// ll sum = 0;
// auto dfs = [&](auto dfs, int i, int cn, ll pro) -> void {
// if (i == p) {
// if (cn == t) {
// sum += pro;
// sum %= p;
// }
// return;
// }
// dfs(dfs, i+1, cn, pro);
// if (i != k) dfs(dfs, i+1, cn+1, pro*i%p);
// };
// dfs(dfs, 1, 0, 1);
// cout << p << " " << k << " " << t << " " << sum << endl;
// }
// }
// }
ll p,k,t; cin >> p >> k >> t;
ll res = 0;
if (t == p-1) res = p-1;
ll x = (res-k)%p;
if (t == 1) {
res = x;
}
else {
if (t%2 == 0) res -= modpow(k, t-1, p)*x;
else res += modpow(k, t-1, p)*x;
}
res %= p;
if (res < 0) res += p;
cout << res << endl;
}
詳細信息
Test #1:
score: 100
Accepted
time: 1ms
memory: 3408kb
input:
7 5 3
output:
1
result:
ok 1 number(s): "1"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3548kb
input:
11 6 7
output:
3
result:
ok 1 number(s): "3"
Test #3:
score: 0
Accepted
time: 0ms
memory: 3364kb
input:
3 2 1
output:
1
result:
ok 1 number(s): "1"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3496kb
input:
596620183 516846890 38276329
output:
135352707
result:
ok 1 number(s): "135352707"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3352kb
input:
382744931 85302262 235496559
output:
14577469
result:
ok 1 number(s): "14577469"
Test #6:
score: 0
Accepted
time: 0ms
memory: 3416kb
input:
659446013 641119314 378275666
output:
290624162
result:
ok 1 number(s): "290624162"
Test #7:
score: 0
Accepted
time: 1ms
memory: 3388kb
input:
227 163 124
output:
189
result:
ok 1 number(s): "189"
Test #8:
score: 0
Accepted
time: 1ms
memory: 3360kb
input:
197 187 19
output:
62
result:
ok 1 number(s): "62"
Test #9:
score: 0
Accepted
time: 0ms
memory: 3352kb
input:
5 3 3
output:
3
result:
ok 1 number(s): "3"
Test #10:
score: 0
Accepted
time: 0ms
memory: 3340kb
input:
7 6 4
output:
1
result:
ok 1 number(s): "1"
Test #11:
score: 0
Accepted
time: 0ms
memory: 3312kb
input:
7 1 1
output:
6
result:
ok 1 number(s): "6"
Test #12:
score: 0
Accepted
time: 1ms
memory: 3320kb
input:
782371 586755 418517
output:
298550
result:
ok 1 number(s): "298550"
Test #13:
score: 0
Accepted
time: 0ms
memory: 3444kb
input:
181081 178315 76002
output:
125177
result:
ok 1 number(s): "125177"
Test #14:
score: 0
Accepted
time: 1ms
memory: 3352kb
input:
715019 492103 446729
output:
221541
result:
ok 1 number(s): "221541"
Test #15:
score: 0
Accepted
time: 0ms
memory: 3412kb
input:
238985261 199832612 162675695
output:
65826267
result:
ok 1 number(s): "65826267"
Test #16:
score: 0
Accepted
time: 1ms
memory: 3364kb
input:
129716453 10994076 62963738
output:
5186275
result:
ok 1 number(s): "5186275"
Test #17:
score: 0
Accepted
time: 1ms
memory: 3448kb
input:
962360593 652577122 345596237
output:
814039152
result:
ok 1 number(s): "814039152"
Test #18:
score: 0
Accepted
time: 0ms
memory: 3552kb
input:
871606937 839183139 754188014
output:
466391387
result:
ok 1 number(s): "466391387"
Test #19:
score: 0
Accepted
time: 0ms
memory: 3376kb
input:
275568091 270750503 241146839
output:
252569968
result:
ok 1 number(s): "252569968"
Test #20:
score: 0
Accepted
time: 0ms
memory: 3324kb
input:
562028473 111749710 450258818
output:
63116256
result:
ok 1 number(s): "63116256"