oj.uz

Submission #520630

# Submission time Handle Problem Language Result Execution time Memory
520630 2022-01-30T11:40:25 Z idas Global Warming (CEOI18_glo) C++11
17 / 100
 51 ms 4744 KB 
#include <bits/stdc++.h>
#define FOR(i, begin, end) for(int i = (begin); i < (end); i++)
#define FAST_IO ios_base::sync_with_stdio(0); cin.tie(nullptr); cout.tie(nullptr)
#define f first
#define s second
#define pb push_back
#define sz(x) ((int)((x).size()))
#define le(vec) vec[vec.size()-1]
#define all(x) (x).begin(), (x).end()
#define TSTS int ttt; cin >> ttt; while(ttt--) solve()

using namespace std;
typedef pair<int, int> pii;
typedef pair<long long, long long> pll;
typedef pair<long double, long double> pdd;
typedef map<int, int> mii;
typedef vector<int> vi;
typedef long double ld;
typedef long long ll;

const int INF=1e9, MOD=1e9+7, mod=998244353;
const ll LINF=1e18;

void setIO()
{
    FAST_IO;
}

void setIO(string s)
{
    FAST_IO;
    freopen((s+".in").c_str(), "r", stdin);
    freopen((s+".out").c_str(), "w", stdout);
}

const int N=2e5+10;
int n, x, a[N], ans[N];

int main()
{
    setIO();
    cin >> n >> x;
    FOR(i, 0, n) cin >> a[i];

    vi lds;
    for(int i=n-1; i>=0; i--){
        int l=-1, r=sz(lds)-1;
        while(l<r){
            int m=(l+r+1)/2;
            if(lds[m]>a[i]-x) l=m;
            else r=m-1;
        }
        ans[i]=l+2;

        l=0, r=sz(lds);
        while(l<r){
            int m=(l+r)/2;
            if(lds[m]>a[i]) l=m+1;
            else r=m;
        }
        if(l==sz(lds)) lds.pb(a[i]);
        else lds[l]=a[i];
    }

    vi lis; int mx=0;
    FOR(i, 0, n)
    {
        int in=lower_bound(all(lis), a[i])-lis.begin();
        if(in==sz(lis)) lis.pb(a[i]);
        else lis[in]=a[i];
        mx=max(mx, sz(lis)+ans[i]);
    }

    cout << mx-1;
}

Compilation message

glo.cpp: In function 'void setIO(std::string)':
glo.cpp:32:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |     freopen((s+".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
glo.cpp:33:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |     freopen((s+".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 320 KB Output is correct
3 Incorrect 1 ms 204 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 320 KB Output is correct
3 Incorrect 1 ms 204 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 320 KB Output is correct
3 Incorrect 1 ms 204 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 51 ms 3696 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 13 ms 1100 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 2056 KB Output is correct
2 Correct 27 ms 2016 KB Output is correct
3 Correct 45 ms 3700 KB Output is correct
4 Correct 30 ms 4084 KB Output is correct
5 Correct 14 ms 2168 KB Output is correct
6 Correct 22 ms 4076 KB Output is correct
7 Correct 29 ms 4744 KB Output is correct
8 Correct 18 ms 1984 KB Output is correct

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 320 KB Output is correct
3 Incorrect 1 ms 204 KB Output isn't correct
4 Halted 0 ms 0 KB -