Submission #723740

#	Time	Username	Problem	Language	Result	Execution time	Memory
723740		vjudge1	Catfish Farm (IOI22_fish)	C++17	0 / 100	24 ms	4172 KiB

fish

#include "fish.h"
#include<bits/stdc++.h>
#define ll long long

#include <vector>

ll mx(ll a,ll b){
    if(a>b) return a;
    return b;
}

long long max_weights(int N, int M, std::vector<int> X, std::vector<int> Y,std::vector<int> W) {
    ll dp[N][2],a[N];
    for(int i=0;i<N;i++){
        dp[i][0]=dp[i][1]=a[i]=0;
    }
    for(int i=0;i<M;i++){
        a[X[i]]=1ll*W[i];
    }
    dp[0][1]=a[0];
    dp[1][0]=a[0];
    dp[1][1]=a[1];
    ll ans=mx(a[0],a[1]);
    if(N>2){
        dp[2][1]=mx(a[1],a[0]+a[2]);
        dp[2][0]=mx(a[0],a[1]);
        ans=mx(ans,a[2]);
        if(N>3){
            ans=mx(ans,a[1]+a[2]);
        }
    }
    for(int i=3;i<N;i++){
        dp[i][0]=dp[i-3][0]+a[i-2]+a[i-1];
        dp[i][1]=mx(dp[i-2][1],dp[i-2][0]+a[i-1])+a[i];
    }
    ans=mx(dp[N-1][0],dp[N-1][1]);
    return ans;
}
/*
9 9
0 0 1
1 0 4
2 0 5
3 0 2
4 0 1
5 0 5
6 0 3
7 0 2
8 0 1
*/

• Subtask 1: 0 / 3
• Subtask 2: 0 / 6
• Subtask 3: 0 / 9
• Subtask 4: 0 / 14
• Subtask 5: 0 / 21
• Subtask 6: 0 / 17
• Subtask 7: 0 / 14
• Subtask 8: 0 / 16