Submission #1115083

#	Time	Username	Problem	Language	Result	Execution time	Memory
1115083		Zero_OP	Fire (JOI20_ho_t5)	C++14	7 / 100	121 ms	11592 KiB

ho_t5

#include <bits/stdc++.h>

using namespace std;

struct segment_tree{
    vector<int> st;
    segment_tree(int n) : st(n << 2) {}

    void build(int id, int l, int r, const vector<int>& S){
        if(l == r) st[id] = S[l];
        else{
            int mid = l + r >> 1;
            build(id << 1, l, mid, S);
            build(id << 1 | 1, mid + 1, r, S);
            st[id] = max(st[id << 1], st[id << 1 | 1]);
        }
    }

    int query(int id, int l, int r, int u, int v){
        if(v < l || u > r) return 0;
        if(u <= l && r <= v) return st[id];
        int mid = l + r >> 1;
        return max(query(id << 1, l, mid, u, v), query(id << 1 | 1, mid + 1, r, u, v));
    }
};

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

#ifdef LOCAL
    freopen("task.inp", "r", stdin);
    freopen("task.out", "w", stdout);
#endif // LOCAL

    int N, Q;
    cin >> N >> Q;
    vector<int> S(N + 1);
    for(int i = 1; i <= N; ++i) cin >> S[i];

    segment_tree st(N);
    st.build(1, 1, N, S);

    for(int i = 0; i < Q; ++i){
        int t, l, r;
        cin >> t >> l >> r;
        cout << st.query(1, 1, N, l - t, l) << '\n';
    }



    return 0;
}

/*

*/

Compilation message (stderr)

ho_t5.cpp: In member function 'void segment_tree::build(int, int, int, const std::vector<int>&)':
ho_t5.cpp:12:25: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   12 |             int mid = l + r >> 1;
      |                       ~~^~~
ho_t5.cpp: In member function 'int segment_tree::query(int, int, int, int, int)':
ho_t5.cpp:22:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   22 |         int mid = l + r >> 1;
      |                   ~~^~~

• Subtask 1: 0 / 1
• Subtask 2: 0 / 6
• Subtask 3: 7 / 7
• Subtask 4: 0 / 6
• Subtask 5: 0 / 80