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ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#589428 | #5301. Modulo Ruins the Legend | qmqcbhc | WA | 0ms | 3716kb | C++14 | 1.7kb | 2024-09-25 17:50:34 | 2024-09-25 17:50:35 |
Judging History
answer
#include<iostream>
#include<set>
#include<map>
#include<vector>
#include<algorithm>
#include<bitset>
#include<math.h>
#include<string>
#include<string.h>
#include<stack>
#include<queue>
#include<time.h>
#include<random>
using namespace std;
typedef long long ll;
mt19937 rnd(time(0));
ll gcd(ll a, ll b) {
if (b == 0) return a;
else return gcd(b, a % b);
}
ll ksm(ll x, ll y)
{
ll ans = 1;
while (y)
{
if (y & 1)
ans *= x;
x *= x;
y >>= 1;
}
return ans;
}
ll exgcd(ll a, ll b, ll& x, ll& y) {
if (b == 0) {
x = 1, y = 0;
return a;
}
ll r = exgcd(b, a % b, x, y);
ll t = x;
x = y;
y = t - a / b * y;
return r;
}
void fio()
{
ios::sync_with_stdio();
cin.tie(0);
cout.tie(0);
}
ll a[250000];
int main()
{
fio();
ll t=1;
while (t--)
{
ll n, m;
ll sum = 0;
cin >> n >> m;
for (ll i = 1; i <= n; i++) {
cin >> a[i];
sum += a[i];
}
sum %= m;
ll x, y;
ll tmp = gcd(n, n * (n + 1) / 2);
exgcd(n, n * (n + 1) / 2,x,y);
ll x1 = x, y1 = y;
//cout << x1 << " " << y1 << endl;
ll tt = gcd(tmp, m);
exgcd(tmp, m,x,y);
// ll x2 = x, y2 = y;
// ll t1 = sum / tt * tt;
// ll t2 = (sum / tt + 1) * tt;
// bool flag = 0;
ll k=((m-sum+tt-1)/tt)%m;
//cout << k << endl;
cout << sum+k*tt-m << endl;
// ll res = min(sum - t1, t2 - sum);
//cout << res << endl;
//x1 *= x2;
x1 *= k;
x1 %= m;
//y1 *= x2;
y1 *= k;
y1 %= m;
// if (flag) {
// x1 *= -1;
// y1 *= -1;
// }
if (x1 < 0) {
ll tmp = (0 - x1) / m + 1;
x1 += tmp * m;
x1 %= m;
}
if (y1 < 0) {
ll tmp = (0 - y1) / m + 1;
y1 += tmp * m;
y1 %= m;
}
cout << x1 << " " << y1 << endl;
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3716kb
input:
6 24 1 1 4 5 1 4
output:
1 15 3
result:
ok ok
Test #2:
score: -100
Wrong Answer
time: 0ms
memory: 3640kb
input:
7 29 1 9 1 9 8 1 0
output:
-29 0 0
result:
wrong answer Integer parameter [name=sum] equals to -29, violates the range [0, 28]