Submission #1237599

#TimeUsernameProblemLanguageResultExecution timeMemory
1237599clemmy14Bouquet (EGOI24_bouquet)C++20
0 / 100
44 ms2632 KiB
#include<bits/stdc++.h>
using namespace std;

signed main() {
    int n; cin >> n;
    vector<int> l(n), r(n);
    for(int i=0; i<n; i++) cin >> l[i] >> r[i];
   
    vector<int> dp(n, 1); 
    for(int i=1; i<n; i++) {
        if(i > 2) dp[i]=max(dp[i], dp[i-3]+1);
        if(i > 1) {
            if(r[i-2] < 2 && l[i] < 2) dp[i]=max(dp[i], dp[i-2]+1);
        }
        if(r[i-1] < 1 && l[i] < 1) dp[i]=max(dp[i], dp[i-1]+1);
    }
    int ans=0;
    for(int i=0; i<n; i++) ans=max(ans, dp[i]);
    cout << ans;
    return 0;
}
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