#include "fish.h"
#include <bits/stdc++.h>
using namespace std;
long long max_weights(int N, int M, std::vector<int> X, std::vector<int> Y,
std::vector<int> W) {
vector<int> Y1, Y2;
vector<long long> W1 = { 0 }, W2 = { 0 };
for (int i = 0; i < M; i++) {
if (X[i]) {
Y2.push_back(Y[i]);
W2.push_back(W2.back() + W[i]);
}
else {
Y1.push_back(Y[i]);
W1.push_back(W1.back() + W[i]);
}
}
long long ans = 0;
for (int i = 0; i <= N; i++) {
auto iter1 = lower_bound(Y1.begin(), Y1.end(), i);
auto iter2 = lower_bound(Y2.begin(), Y2.end(), i);
ans = max(ans, max(W1[iter1 - Y1.begin()], W2[iter2 - Y2.begin()]));
}
return ans;
}
