oj.uz

Submission #282781

# Submission time Handle Problem Language Result Execution time Memory
282781 2020-08-24T22:32:46 Z doowey Global Warming (CEOI18_glo) C++14
10 / 100
 52 ms 13680 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<ll, int> pii;

#define fi first
#define se second
#define mp make_pair
#define fastIO ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);

const ll inf = (ll)1e10;
const int N = (int)2e5 + 10;
vector<pii> qq[N];

int main(){
    fastIO;
    int n;
    ll x;
    cin >> n >> x;
    vector<ll> v(n);
    for(int i = 0 ; i < n; i ++ ){
        cin >> v[i];
    }
    vector<ll> q;
    ll c;
    int id;
    int res = 0;
    for(int i = 0 ; i < n; i ++ ){
        c = v[i] - x;
        id = lower_bound(q.begin(), q.end(), c) - q.begin();
        if(id == q.size()){
            q.push_back(c);
        }
        else{
            q[id] = c;
        }
        qq[i+1].push_back(mp(c, id+1));
        res = max(res, id + 1);
    }
    vector<ll> g = {};
    int l, r, mid;
    for(int i = n - 1; i >= 0; i -- ){
        l = 0, r = g.size()+1;
        while(l + 1 < r){
            mid = (l + r) / 2;
            if(g[mid] < v[i]){
                r = mid;
            }
            else{
                l = mid;
            }
        }
        if(l == g.size()){
            g.push_back(v[i]);
        }
        else{
            g[l] = v[i];
        }
        for(auto x : qq[i]){
            l = 0, r = g.size();
            while(l + 1 < r){
                mid = (l + r) / 2;
                if(g[mid] > x.fi)
                    l = mid;
                else
                    r = mid;
            }
            res = max(res, l + (g[l]>x.fi) + x.se);
        }
    }
    cout << res << "\n";
    return 0;
}

Compilation message

glo.cpp: In function 'int main()':
glo.cpp:33:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |         if(id == q.size()){
      |            ~~~^~~~~~~~~~~
glo.cpp:55:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |         if(l == g.size()){
      |            ~~^~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Incorrect 4 ms 4992 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Incorrect 4 ms 4992 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Incorrect 4 ms 4992 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 51 ms 12920 KB Output is correct
2 Correct 51 ms 12920 KB Output is correct
3 Correct 51 ms 12920 KB Output is correct
4 Correct 52 ms 12920 KB Output is correct
5 Correct 40 ms 13680 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 7040 KB Output is correct
2 Correct 15 ms 7040 KB Output is correct
3 Correct 16 ms 7040 KB Output is correct
4 Incorrect 13 ms 7164 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 27 ms 8960 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Incorrect 4 ms 4992 KB Output isn't correct
3 Halted 0 ms 0 KB -