提出 #44777674

ソースコード 拡げる

#include<bits/stdc++.h>
using namespace std;
#define ll long long
ll gcd(ll a, ll b)
{
    if (b == 0) return a;
    return gcd(b, a % b);
}
ll extgcd(ll a, ll b, ll& x, ll& y)
{
    if (b == 0) {
        x = 1;
        y = 0;
        return a;
    }
    ll c = extgcd(b, a % b, y, x);
    y -= a / b * x;
    return c;
}
ll divFloor(ll x, ll y)
{
    if (x % y == 0) return x / y;
    if (x >= 0) return x / y;
    else return -((-x) / y) - 1LL;
}
ll divCeil(ll x, ll y)
{
    if (x % y == 0) return x / y;
    if (x >= 0) return x / y + 1LL;
    else return -((-x) / y);
}
int main()
{
    ll n, a0, b0, c0, x;
    cin >> n >> a0 >> b0 >> c0 >> x;
    ll gbc = gcd(b0, c0);
    ll ans = 0;
    for (int i = 1; i <= n; ++i)
	{
        ll y = x - a0 * i;
        if (y < 0) break;
        if (y % gbc > 0) continue;
        ll gbcy = gcd(y, gbc);
        ll b = b0 / gbcy;
        ll c = c0 / gbcy;
        y /= gbcy;
        ll j0, k0;
        extgcd(b, c, j0, k0);
        j0 *= y % b;
        k0 *= y % b;
        j0 += y / b;
        ll mjmin = divCeil(1 - j0, c);
        ll mjmax = divFloor(n - j0, c);
        ll mkmin = divCeil(k0 - n, b);
        ll mkmax = divFloor(k0 - 1, b);
        ll mmin = max(mjmin, mkmin);
        ll mmax = min(mjmax, mkmax);
        if (mmax >= mmin) ans += mmax - mmin + 1;
    }
    cout << ans << endl;
    return 0;
}

提出情報

提出日時
問題 G - Ai + Bj + Ck = X (1 <= i, j, k <= N)
ユーザ Astatinear
言語 C++ 20 (gcc 12.2)
得点 550
コード長 1419 Byte
結果 AC
実行時間 158 ms
メモリ 3652 KiB

ジャッジ結果

セット名 Sample All
得点 / 配点 0 / 0 550 / 550
結果
AC × 3
AC × 101
セット名 テストケース
Sample sample_01.txt, sample_02.txt, sample_03.txt
All sample_01.txt, sample_02.txt, sample_03.txt, test_01.txt, test_02.txt, test_03.txt, test_04.txt, test_05.txt, test_06.txt, test_07.txt, test_08.txt, test_09.txt, test_10.txt, test_11.txt, test_12.txt, test_13.txt, test_14.txt, test_15.txt, test_16.txt, test_17.txt, test_18.txt, test_19.txt, test_20.txt, test_21.txt, test_22.txt, test_23.txt, test_24.txt, test_25.txt, test_26.txt, test_27.txt, test_28.txt, test_29.txt, test_30.txt, test_31.txt, test_32.txt, test_33.txt, test_34.txt, test_35.txt, test_36.txt, test_37.txt, test_38.txt, test_39.txt, test_40.txt, test_41.txt, test_42.txt, test_43.txt, test_44.txt, test_45.txt, test_46.txt, test_47.txt, test_48.txt, test_49.txt, test_50.txt, test_51.txt, test_52.txt, test_53.txt, test_54.txt, test_55.txt, test_56.txt, test_57.txt, test_58.txt, test_59.txt, test_60.txt, test_61.txt, test_62.txt, test_63.txt, test_64.txt, test_65.txt, test_66.txt, test_67.txt, test_68.txt, test_69.txt, test_70.txt, test_71.txt, test_72.txt, test_73.txt, test_74.txt, test_75.txt, test_76.txt, test_77.txt, test_78.txt, test_79.txt, test_80.txt, test_81.txt, test_82.txt, test_83.txt, test_84.txt, test_85.txt, test_86.txt, test_87.txt, test_88.txt, test_89.txt, test_90.txt, test_91.txt, test_92.txt, test_93.txt, test_94.txt, test_95.txt, test_96.txt, test_97.txt, test_98.txt
ケース名 結果 実行時間 メモリ
sample_01.txt AC 1 ms 3512 KiB
sample_02.txt AC 1 ms 3640 KiB
sample_03.txt AC 5 ms 3544 KiB
test_01.txt AC 1 ms 3472 KiB
test_02.txt AC 1 ms 3496 KiB
test_03.txt AC 1 ms 3440 KiB
test_04.txt AC 1 ms 3500 KiB
test_05.txt AC 1 ms 3452 KiB
test_06.txt AC 1 ms 3448 KiB
test_07.txt AC 1 ms 3452 KiB
test_08.txt AC 1 ms 3508 KiB
test_09.txt AC 1 ms 3452 KiB
test_10.txt AC 1 ms 3468 KiB
test_11.txt AC 1 ms 3564 KiB
test_12.txt AC 1 ms 3444 KiB
test_13.txt AC 1 ms 3492 KiB
test_14.txt AC 1 ms 3456 KiB
test_15.txt AC 1 ms 3448 KiB
test_16.txt AC 1 ms 3496 KiB
test_17.txt AC 1 ms 3436 KiB
test_18.txt AC 1 ms 3432 KiB
test_19.txt AC 1 ms 3652 KiB
test_20.txt AC 1 ms 3432 KiB
test_21.txt AC 1 ms 3452 KiB
test_22.txt AC 1 ms 3648 KiB
test_23.txt AC 1 ms 3488 KiB
test_24.txt AC 1 ms 3436 KiB
test_25.txt AC 1 ms 3460 KiB
test_26.txt AC 1 ms 3456 KiB
test_27.txt AC 1 ms 3452 KiB
test_28.txt AC 1 ms 3444 KiB
test_29.txt AC 1 ms 3448 KiB
test_30.txt AC 1 ms 3356 KiB
test_31.txt AC 1 ms 3516 KiB
test_32.txt AC 1 ms 3464 KiB
test_33.txt AC 1 ms 3500 KiB
test_34.txt AC 1 ms 3464 KiB
test_35.txt AC 1 ms 3464 KiB
test_36.txt AC 1 ms 3504 KiB
test_37.txt AC 2 ms 3560 KiB
test_38.txt AC 1 ms 3376 KiB
test_39.txt AC 1 ms 3500 KiB
test_40.txt AC 1 ms 3568 KiB
test_41.txt AC 1 ms 3448 KiB
test_42.txt AC 1 ms 3448 KiB
test_43.txt AC 1 ms 3648 KiB
test_44.txt AC 2 ms 3644 KiB
test_45.txt AC 2 ms 3432 KiB
test_46.txt AC 1 ms 3440 KiB
test_47.txt AC 1 ms 3448 KiB
test_48.txt AC 1 ms 3460 KiB
test_49.txt AC 1 ms 3500 KiB
test_50.txt AC 33 ms 3492 KiB
test_51.txt AC 19 ms 3500 KiB
test_52.txt AC 33 ms 3564 KiB
test_53.txt AC 4 ms 3452 KiB
test_54.txt AC 46 ms 3568 KiB
test_55.txt AC 4 ms 3368 KiB
test_56.txt AC 5 ms 3424 KiB
test_57.txt AC 29 ms 3492 KiB
test_58.txt AC 32 ms 3456 KiB
test_59.txt AC 2 ms 3492 KiB
test_60.txt AC 2 ms 3492 KiB
test_61.txt AC 2 ms 3436 KiB
test_62.txt AC 12 ms 3452 KiB
test_63.txt AC 1 ms 3492 KiB
test_64.txt AC 1 ms 3560 KiB
test_65.txt AC 33 ms 3368 KiB
test_66.txt AC 63 ms 3456 KiB
test_67.txt AC 57 ms 3456 KiB
test_68.txt AC 70 ms 3444 KiB
test_69.txt AC 81 ms 3424 KiB
test_70.txt AC 2 ms 3500 KiB
test_71.txt AC 60 ms 3492 KiB
test_72.txt AC 13 ms 3440 KiB
test_73.txt AC 48 ms 3636 KiB
test_74.txt AC 26 ms 3500 KiB
test_75.txt AC 14 ms 3452 KiB
test_76.txt AC 37 ms 3564 KiB
test_77.txt AC 4 ms 3444 KiB
test_78.txt AC 2 ms 3452 KiB
test_79.txt AC 6 ms 3452 KiB
test_80.txt AC 36 ms 3564 KiB
test_81.txt AC 59 ms 3496 KiB
test_82.txt AC 3 ms 3448 KiB
test_83.txt AC 67 ms 3576 KiB
test_84.txt AC 93 ms 3496 KiB
test_85.txt AC 40 ms 3332 KiB
test_86.txt AC 143 ms 3496 KiB
test_87.txt AC 116 ms 3456 KiB
test_88.txt AC 131 ms 3448 KiB
test_89.txt AC 40 ms 3452 KiB
test_90.txt AC 158 ms 3456 KiB
test_91.txt AC 116 ms 3372 KiB
test_92.txt AC 110 ms 3500 KiB
test_93.txt AC 131 ms 3468 KiB
test_94.txt AC 104 ms 3496 KiB
test_95.txt AC 157 ms 3496 KiB
test_96.txt AC 77 ms 3464 KiB
test_97.txt AC 46 ms 3456 KiB
test_98.txt AC 61 ms 3448 KiB