CSES - Putka Open 2025 – 2/5

Submission details
Task:	Leimasin
Sender:	jhuun
Submission time:	2025-09-27 20:18:39 +0300
Language:	C++ (C++20)
Status:	READY
Result:	100

Feedback
group	verdict	score
#1	ACCEPTED	33
#2	ACCEPTED	43
#3	ACCEPTED	24

Test results
test	verdict	time	group
#1	ACCEPTED	0.00 s	1, 2, 3	details
#2	ACCEPTED	0.00 s	1, 2, 3	details
#3	ACCEPTED	0.00 s	1, 2, 3	details
#4	ACCEPTED	0.00 s	1, 2, 3	details
#5	ACCEPTED	0.01 s	2, 3	details
#6	ACCEPTED	0.00 s	2, 3	details
#7	ACCEPTED	0.01 s	2, 3	details
#8	ACCEPTED	0.01 s	2, 3	details
#9	ACCEPTED	0.58 s	3	details
#10	ACCEPTED	0.34 s	3	details
#11	ACCEPTED	0.18 s	3	details
#12	ACCEPTED	0.18 s	3	details
#13	ACCEPTED	0.19 s	3	details
#14	ACCEPTED	0.12 s	3	details

Code

#include <bits/stdc++.h>

#define MIN(a, b) ((a) < (b) ? (a) : (b))

int main() {
    int n, m, k;
    std::string M;
    std::cin >> n >> m >> k >> M;
    std::string res(n, '.');
    std::vector<int> P(k);
    for (int i = 0; i < k; ++i) {
        std::cin >> P[i];
        --P[i];
    }
    std::set<std::pair<int, int>> E{{P.back(), P.back() + m}};
    std::memcpy(res.data() + P.back(), M.data(), m);
    for (const auto p : P | std::views::reverse | std::views::drop(1)) {
        auto next = E.upper_bound({p, n});
        auto prev = std::prev(next);
        const auto [sp, ep] = *prev;
        const auto [sn, en] = next != E.end() ? *next : std::pair<int, int>{n + n, n + n};
        const auto ip = p >= sp && p < ep;
        const auto in = p + m >= sn;
        if (ip && in) {
            E.erase(prev);
            E.erase(next);
            E.emplace(sp, en);
            std::memcpy(res.data() + ep, M.data() + (ep - p), MIN(m + p - ep, sn - ep));
        } else if (ip) {
            if (p >= sp && p + m <= ep) {
                continue;
            }
            E.erase(prev);
            E.emplace(sp, p + m);
            std::memcpy(res.data() + ep, M.data() + (ep - p), p + m - ep);
        } else if (in) {
            E.erase(next);
            E.emplace(p, en);
            std::memcpy(res.data() + p, M.data(), sn - p);
        } else {
            E.emplace(p, p + m);
            std::memcpy(res.data() + p, M.data(), m);
        }
    }
    std::cout << res << '\n';
}

Test details

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

input
`1000 1 100 a 585 600 750 170 794 845 341 39...` view save

correct output
`............a....aa..............` view save

user output
`............a....aa..............` view save

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

input
`1000 4 100 zhrb 795 569 744 662 315 869 913 21...` view save

correct output
`.........................zhrb....` view save

user output
`.........................zhrb....` view save

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

input
`1000 100 100 wkmtgzytnfwptwukbartgunjyrkyml...` view save

correct output
`wkmtgzywkmtgzytnfwptwukbartgun...` view save

user output
`wkmtgzywkmtgzytnfwptwukbartgun...` view save

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

input
`1000 1000 100 njplbyvkaytbcyzbylzntnmpfapvfg...` view save

correct output
`njplbyvkaytbcyzbylzntnmpfapvfg...` view save

user output
`njplbyvkaytbcyzbylzntnmpfapvfg...` view save

Test 5

Group: 2, 3

Verdict: ACCEPTED

input
`100000 1 1000 a 61541 4948 46214 29629 8779 76...` view save

correct output
`.................................` view save

user output
`.................................` view save

Test 6

Group: 2, 3

Verdict: ACCEPTED

input
`100000 10 1000 ntsconpqnv 17118 69319 2115 8873 892 9994...` view save

correct output
`.....................ntsconpqn...` view save

user output
`.....................ntsconpqn...` view save

Test 7

Group: 2, 3

Verdict: ACCEPTED

input
`100000 10000 1000 wcyeepjmmvavmoncfxclqrsebjzwbf...` view save

correct output
`.................................` view save

user output
`.................................` view save

Test 8

Group: 2, 3

Verdict: ACCEPTED

input
`100000 100000 1000 chdcxwwznawllrxcxlckeziomcsjhc...` view save

correct output
`chdcxwwznawllrxcxlckeziomcsjhc...` view save

user output
`chdcxwwznawllrxcxlckeziomcsjhc...` view save

Test 9

Group: 3

Verdict: ACCEPTED

input
`1000000 1 500000 a 406018 635983 429225 943593 90...` view save

correct output
`.a...aa.....a.aaaa.a.aaa..aa.a...` view save

user output
`.a...aa.....a.aaaa.a.aaa..aa.a...` view save

Test 10

Group: 3

Verdict: ACCEPTED

input
`1000000 10 500000 frvhrhlrxi 85148 459715 677814 98302 4081...` view save

correct output
`frvhfrvhrhlrxihrhlrxifrvhrfrvf...` view save

user output
`frvhfrvhrhlrxihrhlrxifrvhrfrvf...` view save

Test 11

Group: 3

Verdict: ACCEPTED

input
`1000000 1000 500000 hklmkntjqgilackgurwlerwvvfjwwr...` view save

correct output
`.hklhklmkntjqgilackgurwlerwvvf...` view save

user output
`.hklhklmkntjqgilackgurwlerwvvf...` view save

Test 12

Group: 3

Verdict: ACCEPTED

input
`1000000 10000 500000 yxajftmelgwiofcugtrvcltdemhyuu...` view save

correct output
`yxajftyxayxajftmelgwiofcugtrvc...` view save

user output
`yxajftyxayxajftmelgwiofcugtrvc...` view save

Test 13

Group: 3

Verdict: ACCEPTED

input
`1000000 100000 500000 yyzteckvutdnprlklyxgenyqpznght...` view save

correct output
`.yyyyzteckvutdnpryyzteckvutdnp...` view save

user output
`.yyyyzteckvutdnpryyzteckvutdnp...` view save

Test 14

Group: 3

Verdict: ACCEPTED

input
`1000000 1000000 500000 hhgvveiosloznsihxtccfjbizayyhl...` view save

correct output
`hhgvveiosloznsihxtccfjbizayyhl...` view save

user output
`hhgvveiosloznsihxtccfjbizayyhl...` view save

Putka Open 2025 – 2/5

Leimasin

Code

Test details

Test 1

Test 2

Test 3

Test 4

Test 5

Test 6

Test 7

Test 8

Test 9

Test 10

Test 11

Test 12

Test 13

Test 14

Tasks

Submissions (jhuun)