update ucpc2026

source/Misc/NegDiv.cpp

@@ -1,7 +1,5 @@
 #define div _div
-ll div(ll A, ll B)
-{
-    ll q = A/B;
-    if(A<0) q-=(B>0)-(B<0);
+ll div(ll A, ll B) {
+    ll q = A/B; if(A<0) q-=(B>0)-(B<0);
     return q;
 }

source/Misc/mt19937.cpp

@@ -1,7 +1,18 @@
-const long long rand_L = 1;
-const long long rand_R = 10;
-mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
-uniform_int_distribution<int> dist(rand_L, rand_R);
+const long long L = 1, R = 10;
+
+random_device rd; mt19937 rng(rd());
+uniform_int_distribution<int> dist(L, R);
+// discrete_distribution<int> dist({10, 30, 60}); // [0, 2]
+// bernoulli_distribution dist(p); // true(p), false(1-p)
+// binomial_distribution<int> dist(N, p); // # of success
+// geometric_distribution<int> dist(p); // # of failure
+
+// uniform_real_distribution<double> dist(L, R);
+// normal_distribution<double> dist(mean, std);
+// exponential_distribution<double> dist(lambda); // occur time
+// poisson_distribution<int> dist(lambda); // how many?
+// chi_squared_distribution<double> dist(df); // 자유도
+
 auto gen = bind(dist, rng);
 
 gen(); gen(); gen();