Submission #855907

#	Time	Username	Problem	Language	Result	Execution time	Memory
855907		wakandaaa	Deda (COCI17_deda)	C++17	140 / 140	120 ms	23636 KiB

deda

#include <bits/stdc++.h>

using namespace std;

#define mp make_pair
#define fi first
#define se second
#define all(x) x.begin(), x.end()

#define getbit(x, i) (((x) >> (i)) & 1)
#define bit(x) (1 << (x))
#define popcount __builtin_popcountll

mt19937_64 rd(chrono::steady_clock::now().time_since_epoch().count());
long long rand(long long l, long long r) {
    return l + rd() % (r - l + 1);
}

const int N = 1e6 + 5;
const int mod = 1e9 + 7; // 998244353;
const int lg = 25; // lg + 1
const int inf = 1e9; // INT_MAX;
const long long llinf = 1e18; // LLONG_MAX;

template<class X, class Y>
bool minimize(X &a, Y b) {
    return a > b ? (a = b, true) : false;
}

template<class X, class Y>
bool maximize(X &a, Y b) {
    return a < b ? (a = b, true) : false;
}

template<class X, class Y>
bool add(X &a, Y b) {
    a += b;
    while (a >= mod) a -= mod;
    while (a < 0) a += mod;
    return true;
}

struct node {
    int L, R, M, val;
    node *l, *r;
    node(int _L, int _R) {
        L = _L;
        R = _R;
        M = (L + R) >> 1;
        val = 1e9;
        if (L < R) {
            l = new node(L, M);
            r = new node(M + 1, R);
        }
    }

    void modify(int i, int c) {
        if (i < L || i > R) return;
        if (L == R) {
            val = c;
            return;
        }
        if (i <= M) 
            l->modify(i, c);
        else 
            r->modify(i, c);
        val = min(l->val, r->val);
    }

    int find(int i, int c) {
        if (i > R) return -1;
        if (L == R) return val > c ? -1 : L;
        int x = -1;
        if (l->val <= c) x = l->find(i, c);
        if (x != -1) return x;
        else return r->find(i, c);
    }
} *root;

int n, q;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);

    cin >> n >> q;
    root = new node(1, n);

    while (q--) {
        char c;
        int x, y;
        cin >> c >> x >> y;
        if (c == 'M') {
            root->modify(y, x);
        }
        else {
            cout << root->find(y, x) << '\n';
        }
    }

    return 0;
}

/*

*/

• Subtask 1: 140 / 140