#include <bits/stdc++.h>
#include "fish.h"
using namespace std;
long long dp[100005][2],ar[100005];
long long rec(int i,bool f,int m){
if(i==m)return 0;
if(~dp[i][f^1])return dp[i][f^1];
long long z=rec(i+1,1,m);
if(f)return dp[i][0]=max(z,rec(i+1,0,m)+ar[i]);
if(i<x-1)return dp[i][1]=max(z,rec(i+2,0,m)+ar[i]);
return dp[i][1]=ar[i];
}
long long max_weights(int x,int k,vector<int> a,vector<int> b,vector<int> c){
vector<pair<int,int>>l[2];
long long ans=0,cur=0,cur2=0;
bool f=1;
for(int i=0;i<k;i++){
l[a[i]%2].push_back({b[i],c[i]});
if(a[i]%2)cur+=c[i];
else cur2+=c[i];
f&=(b[i]==0);
}
if(f){
for(int i=0;i<x;i++)dp[i][0]=-1,dp[i][1]=-1,ar[i]=0;
for(int i=0;i<k;i++)ar[a[i]]=c[i],ar[a[i]]=c[i];
return rec(0,0,x);
}
sort(l[0].begin(),l[0].end());
sort(l[1].begin(),l[1].end());
ans=cur;
if(x<=2){
return max(cur,cur2);
}
int j=0;
for(int i=0;i<(int)l[0].size();i++){
cur+=l[0][i].second;
while(j<l[1].size()&&l[1][j].first<=l[0][i].first){
cur-=l[1][j].second;
j++;
}
ans=max(ans,cur);
}
return ans;
}
Compilation message
fish.cpp: In function 'long long int rec(int, bool, int)':
fish.cpp:10:8: error: 'x' was not declared in this scope
10 | if(i<x-1)return dp[i][1]=max(z,rec(i+2,0,m)+ar[i]);
| ^
fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:37:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
37 | while(j<l[1].size()&&l[1][j].first<=l[0][i].first){
| ~^~~~~~~~~~~~
