Language: C++

#include <bits/stdc++.h>
#define ALL(A) (A).begin(), (A).end()
#define ll long long
#define rep(i, n) for (int i = 0; i < (n); i++)

const ll mod = 1e9 + 7;
const ll INF = -1 * ((1LL << 63) + 1);
const int inf = -1 * ((1 << 31) + 1);

using namespace std;
using P = pair<int,int>;
template<typename T>
struct BIT {
    int n;
    vector<T> d;
    BIT(int n=0):n(n),d(n+1) {}
    void add(int i,T x=1){
        for(i++;i<=n;i += i&-i){
            d[i] += x;
        }
    }
    T sum(int i){
        T x = 0;
        for(i++;i;i-= i&-i) {
            x += d[i];
        }
        return x;
    }
};

int main(void){
    cin.tie(0);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(20);
    int n,d,a;
    cin >> n >> d >> a;
    d*= 2;
    vector<pair<int,int>> p(n);
    rep(i,n) cin >> p[i].first >> p[i].second;
    sort(ALL(p));
    ll ans = 0;
    BIT<ll> bit(n+1);
    rep(i,n){
        ll x = p[i].first;
        ll h = p[i].second;
        h -= bit.sum(i);
        if(h<=0)continue;
        ll num = (h+a-1)/a;
        ans += num;
        ll damage = num*a;
        bit.add(i,damage);
        ll rx = min(x+d+1,100100100111);
        ll j = upper_bound(ALL(p),P(rx+1,-1)) - p.begin();
        bit.add(j,-damage);
    }
    cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:52:20: error: no matching function for call to 'min(long long int, long int)'
   52 |         ll rx = min(x+d+1,100100100111);
      |                 ~~~^~~~~~~~~~~~~~~~~~~~
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:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:52:20: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'long int')
   52 |         ll rx = min(x+d+1,100100100111);
      |                 ~~~^~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: 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:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:52:20: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   52 |         ll rx = min(x+d+1,100100100111);
      |                 ~~~^~~~~~~~~~~~~~~~~~~~