문제 링크 : boj.kr/28137난이도 : G4태그 : 수학코드#include #define all(x) (x).begin(), (x).end()#define INF 0x7FFFFFFFusing namespace std;using ll = long long;using ld = long double;using pii = pair;using pll = pair;int main(){ ios::sync_with_stdio(0); cin.tie(0); cout.tie(0); int n; ll k; cin >> n >> k; unordered_map _m; for(int i = 0; i > x >> y; _m[y - x*k] += 1; } ll ans..