QOJ.ac

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
#94093	#5477. Cake Decoration	whatever^#	AC ✓	6439ms	3548kb	C++17	2.3kb	2023-04-05 12:19:40	2023-04-05 12:19:42

Judging History

你现在查看的是最新测评结果

[2023-08-10 23:21:45]
System Update: QOJ starts to keep a history of the judgings of all the submissions.

[2023-04-05 12:19:42]
评测

测评结果：AC
用时：6439ms
内存：3548kb

查看

[2023-04-05 12:19:40]
提交

answer

#include <bits/stdc++.h>
#define rep(i, a, b) for (int i = a, I = b; i <= I; ++i)
#define per(i, a, b) for (int i = a, I = b; i >= I; --i)
using namespace std;
using i64 = long long;

const int P = 998244353;
i64 x, l, r;

int main() {
	ios::sync_with_stdio(0), cin.tie(0);

    cin >> x >> l >> r, --r;
    i64 ans = 0;

    auto calc = [&](i64 L, i64 R) {
        L = max(l, L), R = min(r, R);
        return max(0ll, R - L + 1);
    };
    auto check = [&](i64 x) {
        return x >= l && x <= r;
    };

    for (i64 a = 1; a * (a + 1) * (a + 2) * (a + 3) <= x; ++a) {
        for (i64 b = a + 1; a * b * (b + 1) * (b + 2) <= x; ++b) {
            i64 lim = x / (a * b), L = b + 1, R = sqrt(lim);
            while (R * (R + 1) > lim) --R;
            ans += (R - L + 1) * check(a + b);
            ans += calc(a + L, a + R) + calc(b + L, b + R);
            rep(t, 0, 1) {
                i64 tmp = (t == 0) ? r : (l - 1), res = 0;
                {
                    i64 l = L, r = R, pos = R + 1;
                    while (l <= r) {
                        i64 mid = (l + r) >> 1;
                        if (a + lim / mid <= tmp) pos = mid, r = mid - 1;
                        else l = mid + 1;
                    }
                    res += R - pos + 1;
                }
                {
                    i64 l = L, r = R, pos = R + 1;
                    while (l <= r) {
                        i64 mid = (l + r) >> 1;
                        if (b + lim / mid <= tmp) pos = mid, r = mid - 1;
                        else l = mid + 1;
                    }
                    res += R - pos + 1;
                }
                {
                    i64 l = L, r = R, pos = R + 1;
                    while (l <= r) {
                        i64 mid = (l + r) >> 1;
                        if (mid + lim / mid <= tmp) pos = mid, r = mid - 1;
                        else l = mid + 1;
                    }
                    res += R - pos + 1;
                }
                ans += (t ? -res : res);
            }
            // for (i64 c = L; c <= R; ++c) {
            //     i64 d = lim / c;
            //     ans  += check(a + d) + check(b + d) + check(c + d);
            // }
        }
    }
    cout << (ans * 4) % P << "\n";

	return 0;
}

源文件, 语言: C++17

详细

Test #1:

score: 100

Accepted

time: 0ms

memory: 3544kb

input:

24 4 6

output:

result:

ok single line: '12'

Test #2:

score: 0

Accepted

time: 1ms

memory: 3372kb

input:

30 5 6

output:

result:

ok single line: '4'

Test #3:

score: 0

Accepted

time: 2ms

memory: 3432kb

input:

30 9 20

output:

result:

ok single line: '0'

Test #4:

score: 0

Accepted

time: 6045ms

memory: 3292kb

input:

100000000000000 1 100000000000000

output:

288287412

result:

ok single line: '288287412'

Test #5:

score: 0

Accepted

time: 2ms

memory: 3340kb

input:

51256 4 35

output:

result:

ok single line: '29116'

Test #6:

score: 0

Accepted

time: 0ms

memory: 3436kb

input:

5845 10 163

output:

result:

ok single line: '10724'

Test #7:

score: 0

Accepted

time: 2ms

memory: 3488kb

input:

47139 6 167

output:

result:

ok single line: '71716'

Test #8:

score: 0

Accepted

time: 2ms

memory: 3548kb

input:

20603 5 167

output:

result:

ok single line: '36556'

Test #9:

score: 0

Accepted

time: 2ms

memory: 3380kb

input:

37521 1 76

output:

result:

ok single line: '46956'

Test #10:

score: 0

Accepted

time: 0ms

memory: 3292kb

input:

1 1 10

output:

result:

ok single line: '0'

Test #11:

score: 0

Accepted

time: 5993ms

memory: 3380kb

input:

97083668416826 7 3808058212682

output:

392082021

result:

ok single line: '392082021'

Test #12:

score: 0

Accepted

time: 5432ms

memory: 3288kb

input:

81206220725808 2 45630676823009

output:

956896057

result:

ok single line: '956896057'

Test #13:

score: 0

Accepted

time: 5512ms

memory: 3352kb

input:

83357713762616 8 7064282922851

output:

238276229

result:

ok single line: '238276229'

Test #14:

score: 0

Accepted

time: 5575ms

memory: 3492kb

input:

85445471832361 6 56105073865950

output:

611528255

result:

ok single line: '611528255'

Test #15:

score: 0

Accepted

time: 5871ms

memory: 3436kb

input:

92699451513867 7 40224031632009

output:

527678799

result:

ok single line: '527678799'

Test #16:

score: 0

Accepted

time: 5779ms

memory: 3432kb

input:

91239680645595 2 6753821

output:

949101816

result:

ok single line: '949101816'

Test #17:

score: 0

Accepted

time: 5553ms

memory: 3348kb

input:

84407166448013 9 9804427

output:

100140616

result:

ok single line: '100140616'

Test #18:

score: 0

Accepted

time: 5843ms

memory: 3492kb

input:

92300784798569 1 7627255

output:

506797132

result:

ok single line: '506797132'

Test #19:

score: 0

Accepted

time: 5662ms

memory: 3440kb

input:

86360099055961 16 9430857

output:

909028853

result:

ok single line: '909028853'

Test #20:

score: 0

Accepted

time: 6011ms

memory: 3492kb

input:

96378494166704 16 4791452

output:

961637838

result:

ok single line: '961637838'

Test #21:

score: 0

Accepted

time: 6205ms

memory: 3432kb

input:

92800119725342 19 71735

output:

549693103

result:

ok single line: '549693103'

Test #22:

score: 0

Accepted

time: 6130ms

memory: 3424kb

input:

99241248175798 28 509556

output:

885647806

result:

ok single line: '885647806'

Test #23:

score: 0

Accepted

time: 5923ms

memory: 3436kb

input:

90117794770692 17 324480

output:

701148580

result:

ok single line: '701148580'

Test #24:

score: 0

Accepted

time: 6178ms

memory: 3372kb

input:

99417213318477 67 305057

output:

478902343

result:

ok single line: '478902343'

Test #25:

score: 0

Accepted

time: 5819ms

memory: 3368kb

input:

90584131165693 78 897660

output:

879735139

result:

ok single line: '879735139'

Test #26:

score: 0

Accepted

time: 6144ms

memory: 3372kb

input:

92129120236843 702 5645

output:

28323443

result:

ok single line: '28323443'

Test #27:

score: 0

Accepted

time: 6110ms

memory: 3340kb

input:

90203225783100 802 6272

output:

966952096

result:

ok single line: '966952096'

Test #28:

score: 0

Accepted

time: 5792ms

memory: 3420kb

input:

82248112022135 533 2266

output:

280479804

result:

ok single line: '280479804'

Test #29:

score: 0

Accepted

time: 6009ms

memory: 3376kb

input:

84853900427215 368 25431

output:

471070321

result:

ok single line: '471070321'

Test #30:

score: 0

Accepted

time: 6255ms

memory: 3376kb

input:

91754392379969 149 24312

output:

577285220

result:

ok single line: '577285220'

Test #31:

score: 0

Accepted

time: 6439ms

memory: 3444kb

input:

100000000000000 1 2

output:

result:

ok single line: '0'

Test #32:

score: 0

Accepted

time: 5711ms

memory: 3284kb

input:

100000000000000 10000000000000 100000000000000

output:

result:

ok single line: '36'