Submission #643401

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
643401	2022-09-22 01:51:16	andecaandeci	Martian DNA (BOI18_dna)	C++17	100 / 100	28 ms	2772 KiB

dna

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#include <bits/stdc++.h>
using namespace std;
int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int n, k, r; cin >> n >> k >> r;
    vector<int>a(n + 1), req(n + 1), freq(n + 1);
    for(int i = 1; i <= n; i++) cin >> a[i];
    for(int i = 1; i <= r; i++){
        int x, y; cin >> x >> y;
        req[x] = y;
    }
    int ans = 1e9;
    int left = 1, right = 0;
    int ok = 0;
    while(left <= n && right <= n){
        while(right + 1 <= n && ok != r){
            freq[a[right + 1]]++;
            if(freq[a[right + 1]] == req[a[right + 1]]) ok++;
            right++;
        }
        if(ok != r) break;
        ans = min(ans, right - left + 1);
        freq[a[left]]--;
        if(freq[a[left]] < req[a[left]]) ok--;
        left++;
 
 
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• Subtask 1: 16 / 16
• Subtask 2: 24 / 24
• Subtask 3: 28 / 28
• Subtask 4: 32 / 32