이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include "fish.h"
#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
ll max_weights(int n, int m, vector<int> x, vector<int> y, vector<int> w){
vector<ll> fish(n+1,0);
for(int i=0;i<m;i++) fish[x[i]]=w[i];
ll dp[n][2][2][2]; // 0: not pound | 1: pound
memset(dp,0,sizeof dp);
for(int i=0;i<2;i++)
for(int j=0;j<2;j++)
dp[0][i][j][0]=dp[0][i][j][1]=0;
for(int i=0;i<2;i++){
dp[1][i][0][0]=0;
dp[1][i][0][1]=fish[0];
dp[1][i][1][0]=fish[1];
dp[1][i][1][1]=0;
}
for(int i=2;i<n;i++){
for(int j=0;j<2;j++){
for(int k=0;k<2;k++){
dp[i][0][0][0]=max(dp[i][0][0][0],dp[i-2][j][k][0]);
dp[i][0][0][1]=max(dp[i][0][0][1],dp[i-2][j][k][0]+fish[i-1]);
dp[i][0][1][0]=max(dp[i][0][1][0],dp[i-2][j][k][0]+fish[i-2]+fish[i]-k*fish[i-2]);
dp[i][0][1][1]=max(dp[i][0][1][1],dp[i-2][j][k][0]+fish[i-2]-k*fish[i-2]);
dp[i][1][0][0]=max(dp[i][1][0][0],dp[i-2][j][k][1]+fish[i-1]);
dp[i][1][0][1]=max(dp[i][1][0][1],dp[i-2][j][k][1]+fish[i-1]);
dp[i][1][1][0]=max(dp[i][1][1][0],dp[i-2][j][k][1]+fish[i]);
dp[i][1][1][1]=max(dp[i][1][1][1],dp[i-2][j][k][1]);
}
}
}
ll res=0;
for(int i=0;i<2;i++)
for(int j=0;j<2;j++)
for(int k=0;k<2;k++)
res=max(res,dp[n-1][i][j][k]);
return res;
}
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