답안 #631584

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
631584	2022-08-18T09:23:55 Z	bachhoangxuan	Martian DNA (BOI18_dna)	C++17	100 / 100	61 ms	4564 KB

dna

#include<bits/stdc++.h>
using namespace std;
#define maxn 200005
int num[maxn],n,k,q,cnt[maxn],a[maxn];
bool check(int mid){
    int x=0;
    for(int i=0;i<k;i++) cnt[i]=0;
    for(int i=1;i<=mid;i++){
        cnt[a[i]]++;
        if(cnt[a[i]]==num[a[i]]) x++;
    }
    if(x==q) return true;
    for(int i=mid+1;i<=n;i++){
        cnt[a[i]]++;
        if(cnt[a[i]]==num[a[i]]) x++;
        if(cnt[a[i-mid]]==num[a[i-mid]]) x--;
        cnt[a[i-mid]]--;
        if(x==q) return true;
    }
    return false;
}
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);cout.tie(NULL);
    cin >> n >> k >> q;
    for(int i=1;i<=n;i++) cin >> a[i];
    for(int i=1;i<=q;i++){
        int x,c;cin >> x >> c;
        num[x]=c;
    }
    int l=1,r=n,ans=-1;
    while(r>=l){
        int mid=(r+l)>>1;
        if(check(mid)){ans=mid;r=mid-1;}
        else l=mid+1;
    }
    if(ans==-1) cout << "impossible\n";
    else cout << ans << '\n';
}

Subtask #1

16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	324 KB	Output is correct
2	Correct	0 ms	328 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	0 ms	328 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	0 ms	324 KB	Output is correct

Subtask #2

24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	356 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	336 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	0 ms	324 KB	Output is correct
13	Correct	0 ms	340 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Correct	0 ms	324 KB	Output is correct

Subtask #3

28.0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	1492 KB	Output is correct
2	Correct	26 ms	1516 KB	Output is correct
3	Correct	18 ms	1492 KB	Output is correct
4	Correct	22 ms	1516 KB	Output is correct
5	Correct	31 ms	2508 KB	Output is correct
6	Correct	22 ms	1496 KB	Output is correct
7	Correct	25 ms	1868 KB	Output is correct
8	Correct	37 ms	3140 KB	Output is correct
9	Correct	27 ms	2004 KB	Output is correct
10	Correct	25 ms	1492 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	336 KB	Output is correct
17	Correct	0 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	0 ms	340 KB	Output is correct
20	Correct	0 ms	332 KB	Output is correct
21	Correct	1 ms	544 KB	Output is correct
22	Correct	0 ms	340 KB	Output is correct
23	Correct	0 ms	212 KB	Output is correct
24	Correct	0 ms	340 KB	Output is correct
25	Correct	0 ms	328 KB	Output is correct

Subtask #4

32.0 / 32.0

#	결과	실행 시간	메모리	Grader output
1	Correct	38 ms	3444 KB	Output is correct
2	Correct	45 ms	3172 KB	Output is correct
3	Correct	43 ms	2824 KB	Output is correct
4	Correct	12 ms	1420 KB	Output is correct
5	Correct	42 ms	4044 KB	Output is correct
6	Correct	61 ms	4564 KB	Output is correct
7	Correct	30 ms	2132 KB	Output is correct
8	Correct	40 ms	2452 KB	Output is correct
9	Correct	26 ms	1492 KB	Output is correct
10	Correct	26 ms	1508 KB	Output is correct
11	Correct	16 ms	1440 KB	Output is correct
12	Correct	23 ms	1516 KB	Output is correct
13	Correct	30 ms	2524 KB	Output is correct
14	Correct	22 ms	1492 KB	Output is correct
15	Correct	23 ms	1588 KB	Output is correct
16	Correct	36 ms	3172 KB	Output is correct
17	Correct	27 ms	1996 KB	Output is correct
18	Correct	27 ms	1496 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	1 ms	340 KB	Output is correct
23	Correct	1 ms	340 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	1 ms	340 KB	Output is correct
26	Correct	0 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	0 ms	340 KB	Output is correct
29	Correct	0 ms	340 KB	Output is correct
30	Correct	0 ms	340 KB	Output is correct
31	Correct	0 ms	340 KB	Output is correct
32	Correct	0 ms	340 KB	Output is correct
33	Correct	0 ms	340 KB	Output is correct