#include <bits/stdc++.h>
// #pragma GCC optimize("Ofast")
// #pragma GCC target("avx2")
// #pragma GCC target("popcnt")
using namespace std;
using ll = long long;
using ull = unsigned long long;
using lld = long double;
using vi = vector<int>;
using vll = vector<ll>;
using ii = pair<int,int>;
using pll = pair<ll, ll>;
using vii = vector<ii>;
using vpll = vector<pll>;
#define endl '\n'
#define all(x) x.begin(),x.end()
#define lsb(x) x&(-x)
#define gcd(a,b) __gcd(a,b)
#define sz(x) (int)x.size()
#define mp make_pair
#define pb push_back
#define fi first
#define se second
#define fls cout.flush()
#define fore(i,l,r) for(auto i=l;i<r;i++)
#define fo(i,n) fore(i,0,n)
#define forex(i,r,l) for(auto i=r; i>=l;i--)
#define ffo(i,n) forex(i,n-1,0)
bool cmin(int &a, int b){if(b<a){a=b;return 1;}return 0;}
bool cmax(int &a, int b){if(b>a){a=b;return 1;}return 0;}
void valid(ll in){cout<<((in)?"YES\n":"NO\n");}
ll lcm(ll a, ll b){return (a/gcd(a,b))*b;}
ll gauss(ll n){return (n*(n+1))/2;}
ll max_weights(int n,int m,vi x,vi y,vi w){
ll s[2]{};
set<int> st;
int mx = 0;
fo(i, m) {
mx = max(mx, x[i]);
s[x[i]&1] += w[i];
}
if(sz(st) == 1) return s[0] + s[1];
if(n <= 2)return max(s[0], s[1]);
int arr[2][n];
fo(i, m) arr[x[i]][y[i]] = w[i];
ll ans = max(s[0], s[1]);
s[0] = 0;
fo(i, n){
s[0] += arr[0][i];
s[1] -= arr[1][i];
ans = max(ans, max(s[0], s[1]));
}
return ans;
}
// void test_case(){
// }
// int main(){cin.tie(0)->sync_with_stdio(0);
// int t=1;
// // cin >> t;
// while(t--)test_case();
// }
Compilation message
/usr/bin/ld: /tmp/ccFuAPbV.o: in function `main':
stub.cpp:(.text.startup+0x179): undefined reference to `init(int, std::vector<int, std::allocator<int> >)'
/usr/bin/ld: stub.cpp:(.text.startup+0x1c5): undefined reference to `max_towers(int, int, int)'
collect2: error: ld returned 1 exit status
