#include <bits/stdc++.h>
#include "fish.h"
using namespace std;
#define ll long long
#define vl vector<ll>
#define all(aaa) aaa.begin(), aaa.end()
#define ff(aa, bb, cc) for(ll aa = bb; aa < cc; aa++)
#define vb vector<bool>
#define ed "\n"
#define pb push_back
long long max_weights(int n, int m, std::vector<int> X, std::vector<int> Y, std::vector<int> W){
if(n == 1){
return 0;
}
vl a(n, 0), b(n, 0);
ff(i, 0, m){
//cout << "X[i]" << " " << Y[i] << " " << W[i] << " ";
if(X[i] == 0){
//cout << "A";
a[Y[i]] = W[i];
}
else{
//cout << "B";
b[Y[i]] = W[i];
}
//cout << ed;
}
ll c = 0;
ff(i, 0, n){
c += max(a[i], b[i]);
}
return c;
}
/*
int main() {
int N, M;
assert(2 == scanf("%d %d", &N, &M));
std::vector<int> X(M), Y(M), W(M);
for (int i = 0; i < M; ++i) {
assert(3 == scanf("%d %d %d", &X[i], &Y[i], &W[i]));
}
long long result = max_weights(N, M, X, Y, W);
printf("%lld\n", result);
return 0;
}
*/
