Language: C++

#include<bits/stdc++.h>
using namespace std;

const int N = 1e5 + 10;
typedef pair<int, int> P;
vector<int> G[N];
P p[N];
int fa[N], a[N], b[N], vis[N], dp[N];
long long sz[N];
int F(int x) { return x == fa[x] ? x : (fa[x] = F(fa[x])); }
int main() {
    int n, m;
    cin >> n >> m;
    for(int i = 1; i <= n; i++) {
        cin >> a[i] >> b[i];
        p[i] = P(max(0, a[i] - b[i]), i);
        fa[i] = i;
        sz[i] = b[i];
    }
    for(int i = 0; i < m; i++) {
        int u, v; cin >> u >> v;
        G[u].push_back(v);
        G[v].push_back(u);
    }
    sort(p + 1, p + n + 1);
    for(int i = 1; i <= n; i++) {
        int x = p[i].second, mn = p[i].first;
        vis[x] = 1;
        for(int v : G[x]) {
            if(vis[v]) {
                int fv = F(v);
                mn = min(mn, max(p[i].first - sz[fv], dp[fv]));
            }
        }
        for(int v : G[x]) {
            if(vis[v]) {
                int fv = F(v);
                if(fv == x) continue;
                fa[fv] = x;
                sz[x] += sz[fv];
            }
        }
        dp[x] = mn;
    }
    cout << dp[F(1)] + sz[F(1)] << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:32:33: error: no matching function for call to 'max(long long int, int&)'
   32 |                 mn = min(mn, max(p[i].first - sz[fv], dp[fv]));
      |                              ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:32:33: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   32 |                 mn = min(mn, max(p[i].first - sz[fv], dp[fv]));
      |                              ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   template argument deduction/substitution failed:
a.cc:32:33: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   32 |                 mn = min(mn, max(p[i].first - sz[fv], dp[fv]));
      |                              ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~