Submission #735756

#	Time	Username	Problem	Language	Result	Execution time	Memory
735756		Toxtaq	Secret (JOI14_secret)	C++17	30 / 100	515 ms	4488 KiB

secret

#include<bits/stdc++.h>
using namespace std;

int n;

int Secret(int X, int Y);
struct SegmentTree{
    vector<int>segTree;
    void init(int n){
        segTree.resize(4 * n);
    }
    void Build(int node, int l, int r, vector<int>&v){
        if(l == r)segTree[node] = v[l];
        else{
            int mid = (l + r) >> 1;
            Build(node * 2, l, mid, v);
            Build(node * 2 + 1, mid + 1, r, v);
            segTree[node] = Secret(segTree[node * 2], segTree[node * 2 + 1]);
        }
    }
    int Query(int node, int l, int r, int ql, int qr){
        if(ql <= l && r <= qr)return segTree[node];
        if(ql > r || l > qr)return -1;
        int mid = (l + r) >> 1;
        int lc = Query(node * 2, l, mid, ql, qr);
        int rc = Query(node * 2 + 1, mid + 1, r, ql, qr);
        if(lc == -1)return rc;
        if(rc == -1)return lc;
        return Secret(lc, rc);
    }
};
SegmentTree tree;
void Init(int N, int A[]) {
    n = N;
    vector<int>v(n + 1);
    for(int i = 1;i <= n;++i){
        v[i] = A[i - 1];
    }
    tree.init(n);
    tree.Build(1, 1, n, v);
}

int Query(int L, int R) {
    return tree.Query(1, 1, n, L + 1, R + 1);
}

• Subtask 1: 30 / 100