#include<bits/stdc++.h>
#include "fish.h"
using namespace std;
typedef long long ll;
template<class T>void maximize(T& a, T b){
if(a < b){
a = b;
}
}
ll max_weights(int n, int m, vector<int>X, vector<int>Y, vector<int>W){
ll sum = 0;
vector<vector<pair<int, int>>>p(2);
for(int i = 0; i < m; i++){
if(X[i] == 1){
sum += W[i];
p[1].emplace_back(Y[i], W[i]);
}
else{
p[0].emplace_back(Y[i], W[i]);
}
}
sort(p[0].begin(), p[0].end());
sort(p[1].begin(), p[1].end());
p[1].emplace_back(n, 0);
int i = 0;
ll ans = sum;
for(int j = 0; j + 1 < p[1].size(); j++){
sum -= p[1][j].second;
while(i < p[0].size() && p[0][i].first < p[1][j + 1].first){
sum += p[0][i++].second;
}
maximize(ans, sum);
}
return ans;
}
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