답안 #545394

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
545394	2022-04-04T12:27:13 Z	noedit	Deda (COCI17_deda)	C++17	140 / 140	148 ms	3416 KB

deda

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("unroll-loops")
//#pragma GCC target("avx")
using namespace std;
using namespace __gnu_pbds;

typedef long double ld;
template <class T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
//#define int long long
typedef long long ll;

const int MAXN = 2e5;
const int INF = 2e9;

int t[4 * MAXN];

void build(int v, int tl, int tr)
{
    if (tl == tr)
    {
        t[v] = INF;
    }
    else
    {
        int tm = (tl + tr) >> 1;
        build(v * 2, tl, tm);
        build(v * 2 + 1, tm + 1, tr);
        t[v] = min(t[v * 2], t[v * 2 + 1]);
    }
}

void update(int v, int tl, int tr, int p, int x)
{
    if (tl == tr)
    {
        t[v] = x;
        return;
    }
    int tm = (tl + tr) >> 1;
    if (p <= tm)
        update(v * 2, tl, tm, p, x);
    else
        update(v * 2 + 1, tm + 1, tr, p, x);
    t[v] = min(t[v * 2], t[v * 2 + 1]);
}

int get(int v, int tl, int tr, int y)
{
    if (tl == tr)
    {
        if (t[v] <= y)
        return tl;
        else
            return INF;
    }
    int tm = (tl + tr) >> 1;
    if (t[v * 2] <= y)
        return get(v * 2, tl, tm, y);
    else
        if (t[v * 2 + 1] <= y)
            return get(v * 2 + 1, tm + 1, tr, y);
    return INF;
}



int get(int v, int tl, int tr, int l, int r, int y)
{
    if (l > r || l < tl || tr < r) return INF;
    if (tl == l && tr == r)
    {
        return get(v, tl, tr, y);
    }
    int tm = (tl + tr) >> 1;
    int ql = get(v * 2, tl, tm, l, min(r, tm), y);
    int qr = get(v * 2 + 1, tm + 1, tr, max(l, tm + 1), r, y);
    return min(ql, qr);
}

signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n, q;
    cin >> n >> q;
    build(1, 0, n - 1);
    while (q--)
    {
        char c;
        cin >> c;
        if (c == 'M')
        {
            int x, a;
            cin >> x >> a;
            a--;
            update(1, 0, n - 1, a, x);
        }
        else
        {
            int y, b;
            cin >> y >> b;
            b--;
            int ans = get(1, 0, n - 1, b, n - 1, y);
            if (ans == INF)
                cout << -1 << '\n';
            else
                cout << ans + 1 << '\n';
        }
    }
    return 0;
}

Subtask #1

140.0 / 140.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	3 ms	340 KB	Output is correct
4	Correct	135 ms	3416 KB	Output is correct
5	Correct	121 ms	2048 KB	Output is correct
6	Correct	143 ms	3276 KB	Output is correct
7	Correct	148 ms	3412 KB	Output is correct