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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#631082#5301. Modulo Ruins the LegendwdwWA 7ms3920kbC++201.9kb2024-10-11 21:54:492024-10-11 21:54:50

Judging History

你现在查看的是最新测评结果

  • [2024-10-11 21:54:50]
  • 评测
  • 测评结果:WA
  • 用时:7ms
  • 内存:3920kb
  • [2024-10-11 21:54:49]
  • 提交

answer

#include<bits/stdc++.h>

#define int long long
using namespace std;
using ll = long long;
using ld = double;
const ll mod = 1e9 + 7;
const ll inf = 1e9;
const int N = 2e5 + 10;

int x, y;
//ax+by=c
//裴蜀定理得c%gcd(a,b)==0才有解 解ax=c(mod b)=ax+by=c 可解得x=x0*c/gcd(a,b),此时mod(b(b值会变化)/gcd(a,b))
int exgcd(int a, int b, int &x, int &y) {
    if (b == 0) {
        x = 1, y = 0;
        return a;
    }
    int x1, y1;
    int d = exgcd(b, a % b, x1, y1);
    x = y1, y = x1 - a / b * y1;
    return d;
}

void solve() {
    int n, m;
    cin >> n >> m;
    vector<int> a1(n + 5);
    int w1 = gcd(n, n * (n + 1) / 2);
    int w2 = gcd(w1, m);
    int ans = 0;
    int sum = 0;
    for (int i = 1; i <= n; i++) {
        cin >> a1[i];
        ans += a1[i];
        ans %= w2;
        sum += a1[i];
    }
    cout << ans << '\n';
    int k2 = -(sum - ans) / w2;
    int a = w1, b = m;
    x = 0, y = 0;
    int d = exgcd(a, b, x, y);
    x *= k2;
    int l = b / d;
    x %= l;
    x += l;
    x %= l;
    //  x+=l;
    int k1 = x;
    a = n, b = (n) * (n + 1) / 2;
    x = 0, y = 0;
    d = exgcd(a, b, x, y);
    x *= k1;
    y *= k1;
    l = b / d;
    int l1 = a / d;
    // cout<<k1<<" ";
    //cout << x << " " << y << '\n';
    if (x < 0) {
        int w1 = abs(x / l);
        x += w1 * l;
        y -= w1 * l1;
        if (x < 0) {
            x += l;
            y -= l1;
        }
    }
    // cout << x << " " << y << '\n';
    if (y < 0) {
        x -= l;
        y += l1;
    }
    if (x < 0) {
        x += m;
    }
    cout << x << " " << y << '\n';

}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
//    cout<<fixed<<setprecision(2);
//    srand(time(0));
    int T = 1;
    // cin >> T;
    while (T--)solve();
    return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3844kb

input:

6 24
1 1 4 5 1 4

output:

1
22 1

result:

ok ok

Test #2:

score: 0
Accepted
time: 0ms
memory: 3556kb

input:

7 29
1 9 1 9 8 1 0

output:

0
0 0

result:

ok ok

Test #3:

score: 0
Accepted
time: 0ms
memory: 3808kb

input:

1 1
0

output:

0
0 0

result:

ok ok

Test #4:

score: 0
Accepted
time: 0ms
memory: 3776kb

input:

1 1000000000
963837005

output:

0
0 36162995

result:

ok ok

Test #5:

score: 0
Accepted
time: 0ms
memory: 3812kb

input:

2 1
0 0

output:

0
0 0

result:

ok ok

Test #6:

score: 0
Accepted
time: 0ms
memory: 3844kb

input:

2 1000000000
948507269 461613424

output:

0
1 196626435

result:

ok ok

Test #7:

score: 0
Accepted
time: 3ms
memory: 3888kb

input:

100000 1
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0...

output:

0
0 0

result:

ok ok

Test #8:

score: 0
Accepted
time: 7ms
memory: 3864kb

input:

100000 1000000000
253614966 278270960 980235895 498158918 928430170 216003119 852570558 948400590 239257296 897053667 294741176 38297441 382677590 406314557 609468973 854148232 314532767 738191551 158215002 5865825 920471826 380037058 356271728 749175327 28319049 208101105 953758995 896570758 521930...

output:

46613
999954640 1

result:

ok ok

Test #9:

score: -100
Wrong Answer
time: 7ms
memory: 3920kb

input:

100000 998244353
561002596 498658036 721339539 63377827 532179242 934651519 234198881 490149304 2056307 499913682 427679408 694677560 516580968 300129454 816286800 688594301 183049581 456627420 495848352 273497462 953217060 796225499 207179832 728054671 409492082 25003432 810431468 206421553 5569626...

output:

0
25118 5208

result:

wrong answer Result not equal to solution.