test/DSL2A_1.test.cpp

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• category: test
• View this file on GitHub
  • Last commit date: 2020-03-01 12:39:31+09:00
• see: https://onlinejudge.u-aizu.ac.jp/courses/library/3/DSL/2/DSL_2_A

Depends on

• data_structure/segtree.cpp
• memo/macro.hpp

Code

#define PROBLEM "https://onlinejudge.u-aizu.ac.jp/courses/library/3/DSL/2/DSL_2_A"
#include "../memo/macro.hpp"
#include "../data_structure/segtree.cpp"

signed main(void) {
    int n, q;
    cin >> n >> q;

    segtree<min_monoid<ll>> seg(n);
    while(q--) {
        int c, x, y;
        cin >> c >> x >> y;
        if(c == 0) {
            seg.update(x, y);
        } else {
            cout << seg.query(x, y+1) << endl;
        }
    }

    return 0;
}

#line 1 "test/DSL2A_1.test.cpp"
#define PROBLEM "https://onlinejudge.u-aizu.ac.jp/courses/library/3/DSL/2/DSL_2_A"
#line 1 "memo/macro.hpp"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using PII = pair<ll, ll>;
#define FOR(i, a, n) for (ll i = (ll)a; i < (ll)n; ++i)
#define REP(i, n) FOR(i, 0, n)
#define ALL(x) x.begin(), x.end()
template<typename T> void chmin(T &a, const T &b) { a = min(a, b); }
template<typename T> void chmax(T &a, const T &b) { a = max(a, b); }
struct FastIO {FastIO() { cin.tie(0); ios::sync_with_stdio(0); }}fastiofastio;
const ll INF = 1LL<<60;
#line 1 "data_structure/segtree.cpp"
// BEGIN CUT
// 根が1
template<typename Monoid>
struct segtree {
    using T = typename Monoid::T;
    int n;
    vector<T> dat;

    segtree(int n_) {
        n = 1;
        while(n < n_) n <<= 1;
        dat.assign(n*2, Monoid::id());
    }
    void build(vector<T> v) {
        REP(i, v.size()) dat[i+n] = v[i];
        for(int i=n-1; i>0; --i) dat[i] = Monoid::op(dat[i*2], dat[i*2+1]);
    }

    T query(int a, int b) {
        if(a >= b) return Monoid::id();
        T l = Monoid::id(), r = Monoid::id();
        for(a+=n, b+=n; a<b; a>>=1, b>>=1) {
            if(a&1) l = Monoid::op(l, dat[a++]);
            if(b&1) r = Monoid::op(dat[--b], r);
        }
        return Monoid::op(l, r);
    }
    void update(int i, T v) {
        i += n;
        dat[i] = v;
        while(i >>= 1) {
            dat[i] = Monoid::op(dat[i*2], dat[i*2+1]);
        }
    }

    friend ostream &operator <<(ostream& out,const segtree<Monoid>& seg){
        out << "---------------------" << endl;
        int cnt = 1;
        for(int i=1; i<=seg.n; i*=2) {
            REP(j, i) {
                out << seg.dat[cnt] << " ";
                cnt++;
            }
            out << endl;
        }
        out << "---------------------" << endl;
        return out;
    }
};

template<typename Tp>
struct min_monoid {
    using T = Tp;
    static constexpr Tp id() { return INT_MAX; }
    static Tp op(const Tp &a, const Tp &b) { return min(a, b); }
};
template<typename Tp>
struct max_monoid {
    using T = Tp;
    static constexpr Tp id() { return -INF; }
    static Tp op(const Tp &a, const Tp &b) { return max(a, b); }
};
template<typename Tp>
struct sum_monoid {
    using T = Tp;
    static constexpr Tp id() { return 0; }
    static Tp op(const Tp &a, const Tp &b) { return a+b; }
};
// END CUT
#line 4 "test/DSL2A_1.test.cpp"

signed main(void) {
    int n, q;
    cin >> n >> q;

    segtree<min_monoid<ll>> seg(n);
    while(q--) {
        int c, x, y;
        cin >> c >> x >> y;
        if(c == 0) {
            seg.update(x, y);
        } else {
            cout << seg.query(x, y+1) << endl;
        }
    }

    return 0;
}

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