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Submission #1097211

# Submission time Handle Problem Language Result Execution time Memory
1097211 2024-10-06T12:20:13 Z alexdd Homecoming (BOI18_homecoming) C++17
0 / 100
 39 ms 48096 KB 
#include <bits/stdc++.h>
using namespace std;
const long long INF = 1e18;
long long dp[4000005][2];
long long a[4000005],b[400005];
long long prefa[4000005],prefb[4000005];
long long int solve(int N, int K, int *copA, int *copB)
{
    for(int i=0;i<N;i++)
    {
        a[i+1] = a[i+N+1] = copA[i];
        b[i+1] = b[i+N+1] = copB[i];
    }
    for(int i=1;i<=2*N;i++)
    {
        prefa[i] = prefa[i-1] + a[i];
        prefb[i] = prefb[i-1] + b[i];
    }
    dp[0][1]=-INF;
    for(int i=1;i<=N;i++)
    {
        dp[i][0] = dp[i][1] = -INF;
        dp[i][0] = max(dp[i-1][0], dp[i-1][1]);
        dp[i][1] = max(dp[i][1], dp[i-1][1]+a[i]-b[i+K-1]);
        if(i-K>=0) dp[i][1] = max(dp[i][1], max(dp[i-K][0],dp[i-K][1])+a[i]-(prefb[i+K-1]-prefb[i-1]));
        else dp[i][1] = max(dp[i][1], a[i]-(prefb[i+K-1]-prefb[i-1]));
        //cerr<<i<<"  "<<dp[i][0]<<" "<<dp[i][1]<<" dp\n";
    }
    return max(dp[N][0], dp[N][1]);
}

Subtask #1
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 18.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 31.0

# Verdict Execution time Memory Grader output
1 Incorrect 39 ms 48096 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 38.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -