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View the Project on GitHub knshnb/competitive_library
#define PROBLEM "https://onlinejudge.u-aizu.ac.jp/courses/library/3/DSL/2/DSL_2_B" #include <bits/stdc++.h> // clang-format off using Int = long long; #define REP_(i, a_, b_, a, b, ...) for (Int i = (a), lim##i = (b); i < lim##i; i++) #define REP(i, ...) REP_(i, __VA_ARGS__, __VA_ARGS__, 0, __VA_ARGS__) struct SetupIO { SetupIO() { std::cin.tie(nullptr), std::ios::sync_with_stdio(false), std::cout << std::fixed << std::setprecision(13); } } setup_io; #ifndef _MY_DEBUG #define dump(...) #endif // clang-format on /** * author: knshnb * created: Sat Mar 28 22:38:45 JST 2020 **/ #define CALL_FROM_TEST #include "../../src/DataStructure/SegmentTree.hpp" #undef CALL_FROM_TEST const Int INF = 1e18; signed main() { Int n, Q; std::cin >> n >> Q; auto seg = make_segment_tree<Int>(std::plus<Int>(), 0); seg.set_by_identity(n); REP(q, Q) { Int c, x, y; std::cin >> c >> x >> y; x--; if (c == 0) { seg.operate(x, y); } else { std::cout << seg.query(x, y) << "\n"; } } }
#line 1 "test/aoj/DSL_2_B.test.cpp" #define PROBLEM "https://onlinejudge.u-aizu.ac.jp/courses/library/3/DSL/2/DSL_2_B" #include <bits/stdc++.h> // clang-format off using Int = long long; #define REP_(i, a_, b_, a, b, ...) for (Int i = (a), lim##i = (b); i < lim##i; i++) #define REP(i, ...) REP_(i, __VA_ARGS__, __VA_ARGS__, 0, __VA_ARGS__) struct SetupIO { SetupIO() { std::cin.tie(nullptr), std::ios::sync_with_stdio(false), std::cout << std::fixed << std::setprecision(13); } } setup_io; #ifndef _MY_DEBUG #define dump(...) #endif // clang-format on /** * author: knshnb * created: Sat Mar 28 22:38:45 JST 2020 **/ #define CALL_FROM_TEST #line 1 "src/DataStructure/SegmentTree.hpp" /// @docs src/DataStructure/SegmentTree.md template <class T, class F> struct SegmentTree { const F op; const T e; SegmentTree(F op_, T e_) : op(op_), e(e_) {} int n; std::vector<T> t; void set_by_identity(int n_) { n = n_; t.clear(), t.resize(2 * n, e); } void set_by_vector(const std::vector<T>& a) { n = a.size(); t.clear(), t.resize(2 * n, e); for (int i = 0; i < n; i++) t[i + n] = a[i]; build(); } void build() { for (int i = n - 1; i; --i) t[i] = op(t[2 * i], t[2 * i + 1]); } T& operator[](int i) { return t[i + n]; } // [l, r) T query(int l, int r) const { assert(0 <= l && l <= r && r <= n); T resl = e, resr = e; for (l += n, r += n; l < r; l >>= 1, r >>= 1) { if (l & 1) resl = op(resl, t[l++]); if (r & 1) resr = op(t[--r], resr); } return op(resl, resr); } // i番目をxに変更 void update(int i, const T& x) { assert(0 <= i && i < n); t[i += n] = x; while (i >>= 1) t[i] = op(t[2 * i], t[2 * i + 1]); } // i番目にxを作用 (a[i] = op(a[i], x)) void operate(int i, const T& x) { assert(0 <= i && i < n); i += n; t[i] = op(t[i], x); while (i >>= 1) t[i] = op(t[2 * i], t[2 * i + 1]); } friend std::string to_string(const SegmentTree<T, F>& seg) { return to_string(std::vector<T>(seg.t.begin() + seg.n, seg.t.end())); } }; template <class T, class F> auto make_segment_tree(F op, T e) { return SegmentTree<T, F>(op, e); } #line 19 "test/aoj/DSL_2_B.test.cpp" #undef CALL_FROM_TEST const Int INF = 1e18; signed main() { Int n, Q; std::cin >> n >> Q; auto seg = make_segment_tree<Int>(std::plus<Int>(), 0); seg.set_by_identity(n); REP(q, Q) { Int c, x, y; std::cin >> c >> x >> y; x--; if (c == 0) { seg.operate(x, y); } else { std::cout << seg.query(x, y) << "\n"; } } }