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#define PROBLEM "https://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=DSL_2_A" #include <bits/stdc++.h> using namespace std; #include "../../../data_structure/sequence/segment_tree.hpp" int main(){ int n, q; cin >> n >> q; segment_tree<int> ST(n, [](int a, int b){return min(a, b);}, 2147483647); for (int i = 0; i < q; i++){ int com, x, y; cin >> com >> x >> y; if (com == 0){ ST.update(x, y); } if (com == 1){ y++; cout << ST.query(x, y) << endl; } } }
#line 1 "test/aoj/dsl/dsl_2_a.test.cpp" #define PROBLEM "https://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=DSL_2_A" #include <bits/stdc++.h> using namespace std; #line 2 "data_structure/sequence/segment_tree.hpp" /** * @brief セグメント木 (うし木) */ template <typename T> struct segment_tree{ int N; vector<T> ST; function<T(T, T)> f; T E; segment_tree(){ } segment_tree(int n, function<T(T, T)> f, T E): f(f), E(E){ N = 1; while (N < n){ N *= 2; } ST = vector<T>(N * 2 - 1, E); } segment_tree(vector<T> A, function<T(T, T)> f, T E): f(f), E(E){ int n = A.size(); N = 1; while (N < n){ N *= 2; } ST = vector<T>(N * 2 - 1, E); for (int i = 0; i < n; i++){ ST[N - 1 + i] = A[i]; } for (int i = N - 2; i >= 0; i--){ ST[i] = f(ST[i * 2 + 1], ST[i * 2 + 2]); } } T operator [](int k){ return ST[N - 1 + k]; } void update(int k, T x){ k += N - 1; ST[k] = x; while (k > 0){ k = (k - 1) / 2; ST[k] = f(ST[k * 2 + 1], ST[k * 2 + 2]); } } T query(int L, int R, int i, int l, int r){ if (r <= L || R <= l){ return E; } else if (L <= l && r <= R){ return ST[i]; } else { int m = (l + r) / 2; return f(query(L, R, i * 2 + 1, l, m), query(L, R, i * 2 + 2, m, r)); } } T query(int L, int R){ return query(L, R, 0, 0, N); } T all(){ return ST[0]; } }; #line 5 "test/aoj/dsl/dsl_2_a.test.cpp" int main(){ int n, q; cin >> n >> q; segment_tree<int> ST(n, [](int a, int b){return min(a, b);}, 2147483647); for (int i = 0; i < q; i++){ int com, x, y; cin >> com >> x >> y; if (com == 0){ ST.update(x, y); } if (com == 1){ y++; cout << ST.query(x, y) << endl; } } }