이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int MN=1e5+2;
struct fish{fish(int xi,int yi,int wi):x(xi),y(yi),w(wi){} int x,y,w;};
ll max_weights(int N,int M,vector<int> X,vector<int> Y,vector<int> W) {
ll dp[MN][2][2],w[MN],ans=0;
for(int i=0;i<M;++i) w[X[i]+1]=W[i];
for(int i=1;i<=N;++i) {
dp[i][0][0]=max(dp[i-1][0][0],dp[i-1][1][0]);
dp[i][1][0]=max(dp[i-1][0][1],dp[i-1][1][1]);
dp[i][0][1]=max(dp[i-1][0][0]+w[i-1],dp[i-1][1][0])+w[i+1];
dp[i][1][1]=max(dp[i-1][0][1],dp[i-1][1][1])-(i>1?w[i]:0)+w[i+1];
ans=max({ans,dp[i][0][0],dp[i][0][1],dp[i][1][1],dp[i][1][0]});
}
return ans;
}
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