#include "fish.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<ll> vll;
typedef vector<vll> vvll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int, int> pi;
typedef pair<ll, ll> pll;
typedef vector<pi> vpi;
typedef vector<pll> vpll;
typedef vector<vpi> vvpi;
typedef vector<vpll> vvpll;
typedef vector<bool> vb;
typedef vector<vb> vvb;
typedef short int si;
typedef vector<si> vsi;
typedef vector<vsi> vvsi;
#define IOS ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
#define L(varll, mn, mx) for(ll varll = (mn); varll < (mx); varll++)
#define LR(varll, mx, mn) for(ll varll = (mx); varll > (mn); varll--)
#define LI(vari, mn, mx) for(int vari = (mn); vari < (mx); vari++)
#define LIR(vari, mx, mn) for(int vari = (mx); vari > (mn); vari--)
#define INPV(varvec) for(auto& varveci : (varvec)) cin >> varveci
#define fi first
#define se second
#define pb push_back
#define INF(type) numeric_limits<type>::max()
#define NINF(type) numeric_limits<type>::min()
#define TCASES int t; cin >> t; while(t--)
ll max_weights(int N, int M, vi X, vi Y, vi W) {
vll w(N, 0ll);
L(i, 0ll, M) {
w[X[i]] = W[i];
}
vvll dp;
L(i, 0ll, 2ll) {
vll dpr(N, 0ll);
dp.pb(dpr);
}
L(i, 1ll, N) {
dp[0ll][i] = max(dp[0ll][i], dp[0ll][i - 1ll]);
dp[0ll][i] = max(dp[0ll][i], dp[1ll][i - 1ll] + w[i]);
dp[1ll][i] = max(dp[1ll][i], dp[1ll][i - 1ll]);
if(i > 1ll) {
dp[1ll][i] = max(dp[1ll][i], max(dp[0ll][i - 2ll], dp[1ll][i - 2ll]) + w[i]);
} else {
dp[1ll][i] = max(dp[1ll][i], w[i - 1ll]);
}
}
return max(dp[0ll][N - 1ll], dp[1ll][N - 1ll]);
}
