Submission #815125

#	Time	Username	Problem	Language	Result	Execution time	Memory
815125		winthemcut3	Global Warming (CEOI18_glo)	C++14	0 / 100	101 ms	6920 KiB

glo

#include <bits/stdc++.h>
#define FastIO ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define ll long long
#define PB push_back
#define ALL(v) (v).begin(), (v).end()
#define FOR(i, a, b) for (int i = (a), _b = (b); i <= _b; i++)
#define FORD(i, b, a) for (int i = (b), _a = (a); i >= _a; i--)
#define fi   first
#define se   second
#define BIT(x, i) (((x) >> (i)) & 1)
using namespace std;

/** END OF TEMPLATE **/

const int mxN = 2e5 + 5;
int n, d;
struct fenwick{
    vector<int> bit;
    int sz;
    fenwick(int t) : sz(t), bit(t+1, 0) {}
    void update(int id, int val) {
        for(; id <= sz; id += id&-id)
            bit[id] = max(bit[id], val);
    }
    int get(int id) {
        int res = 0;
        for(; id > 0; id -= id&-id)
            res = max(res, bit[id]);
        return res;
    }
};
int a[mxN], b[mxN];
int main()
{
    FastIO;
    //freopen("test.cpp", "r", stdin);
    //freopen(".out", "w", stdout);
    cin >> n >> d;
    vector<int> t;
    FOR(i, 1, n) {
        cin >> a[i];
        b[i] = a[i] + d;
        t.PB(a[i]); t.PB(b[i]);
    }
    sort(ALL(t)); t.erase(unique(ALL(t)), t.end());
    FOR(i, 1, n) {
        a[i] = lower_bound(ALL(t), a[i]) - t.begin() + 1;
        b[i] = lower_bound(ALL(t), b[i]) - t.begin() + 1;
    }
    fenwick T1(t.size()+1);
    fenwick T2(t.size()+2);
    int res = 0;
    FOR(i, 1, n) {
        int r1 = T1.get(a[i]-1) + 1;
        int r2 = max(T1.get(b[i]-1), T2.get(a[i]-1)) + 1;
        T1.update(a[i], r1); T2.update(a[i], r2);
        res = max(r1, r2);
    }
    cout << res;
    return 0;
}

/*

*/

Compilation message (stderr)

glo.cpp: In constructor 'fenwick::fenwick(int)':
glo.cpp:19:9: warning: 'fenwick::sz' will be initialized after [-Wreorder]
   19 |     int sz;
      |         ^~
glo.cpp:18:17: warning:   'std::vector<int> fenwick::bit' [-Wreorder]
   18 |     vector<int> bit;
      |                 ^~~
glo.cpp:20:5: warning:   when initialized here [-Wreorder]
   20 |     fenwick(int t) : sz(t), bit(t+1, 0) {}
      |     ^~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 13
• Subtask 4: 0 / 10
• Subtask 5: 0 / 20
• Subtask 6: 0 / 17
• Subtask 7: 0 / 25