oj.uz

답안 #719786

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
719786 2023-04-06T17:11:31 Z lam Team Contest (JOI22_team) C++14
0 / 100
 1 ms 468 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;
const int maxn = 2e5 + 10;
typedef pair<int,int> ii;
typedef pair<int,ii> iii;
#define ff first
#define ss second
int n,m,k;
iii a[maxn];
vector <iii> d;
ii vval;
int f[maxn],f2[maxn];
vector <int> comps_y,comps_z;

int update(int x, int val)
{
    assert(x>=0&&x<=m);
    while (x<=m)
    {
        f[x]=max(f[x],val);
        x+=(x&-x);
    }
}

int get(int x)
{
    assert(x>=0&&x<=m);
    int temp=-1e9;
    while (x>0)
    {
        temp=max(temp,f[x]);
        x-=(x&-x);
    }
    return temp;
}

void update2(int x, int val)
{
    assert(x>=0&&x<=k);
    while (x<=k)
    {
        f2[x]=max(f2[x],val);
        x+=(x&-x);
    }
}

int get2(int x)
{
    int temp=-1e9;
    assert(x>=0&&x<=k);
    while (x>0)
    {
        temp=max(temp,f2[x]);
        x-=(x&-x);
    }
    return temp;
}

inline int get_idy(iii x)
{

    return lower_bound(comps_y.begin(),comps_y.end(),x.ss.ff) - comps_y.begin()+1;
}

inline int get_idz(iii x)
{

    return lower_bound(comps_z.begin(),comps_z.end(),x.ss.ss) - comps_z.begin()+1;
}

void add(iii x)
{
    int y = lower_bound(comps_y.begin(),comps_y.end(),x.ss.ff) - comps_y.begin()+1;
    int z = lower_bound(comps_z.begin(),comps_z.end(),x.ss.ss) - comps_z.begin()+1;
//    cout<<"+ "<<y<<' '<<z<<endl;
    int mmax = get(y-1);
    if (mmax > z) vval = max(vval,make_pair(y,mmax));
    update2(z,y);
}

void add2(iii x)
{
    int y = lower_bound(comps_y.begin(),comps_y.end(),x.ss.ff) - comps_y.begin()+1;
    int z = lower_bound(comps_z.begin(),comps_z.end(),x.ss.ss) - comps_z.begin()+1;
    update(y,z);
    int idx = get2(z-1);
    if (idx!=-1e9) vval=max(vval,make_pair(idx,z));
}

int query(iii x)
{
    int y=x.ss.ff;
    int ans=-1;
    if (vval.ff!=-1&&comps_z[vval.ss-1]>x.ss.ss&&comps_y[vval.ff-1]>y) ans=max(ans,comps_y[vval.ff-1]+comps_z[vval.ss-1]+x.ff);
    return ans;
}
signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);
    cin>>n;
    for (int i=1; i<=n; i++) cin>>a[i].ff>>a[i].ss.ff>>a[i].ss.ss;
    for (int i=1; i<=n; i++)
    {
        comps_y.push_back(a[i].ss.ff);
        comps_z.push_back(a[i].ss.ss);
    }
    sort(comps_y.begin(),comps_y.end());
    comps_y.resize(unique(comps_y.begin(),comps_y.end())-comps_y.begin());
    sort(comps_z.begin(),comps_z.end());
    comps_z.resize(unique(comps_z.begin(),comps_z.end())-comps_z.begin());
    m=comps_y.size();
    k=comps_z.size();
    fill_n(f,m+1,-1e9);
    fill_n(f2,k+1,-1e9);
    sort(a+1,a+n+1);
    d.clear();
    int l,r;
    int ans=-1;
    vval={-1,-1};
    for (int i=1; i<=n; i++)
    {
        if (i==1||a[i].ff!=a[i-1].ff) l=i;
        if (i==n||a[i].ff!=a[i+1].ff)
        {
            r=i;
            int l2,r2;
            for (int j=l; j<=r; j++)
            {
                if (j==l||a[j].ss.ff!=a[j-1].ss.ff) l2=j;
                if (j==r||a[j].ss.ff!=a[j+1].ss.ff)
                {
                    r2=j;
                    ans=max(ans,query(a[l2]));
                    ans=max(ans,query(a[r2]));
                }
            }
            for (int j=l; j<=r; j++)
            {
                if (j==l||a[j].ss.ff!=a[j-1].ss.ff) l2=j;
                if (j==r||a[j].ss.ff!=a[j+1].ss.ff)
                {
                    r2=j;
                    add(a[r2]);
                    add(a[l2]);
                }
            }
            for (int j=l; j<=r; j++)
            {
                if (j==l||a[j].ss.ff!=a[j-1].ss.ff) l2=j;
                if (j==r||a[j].ss.ff!=a[j+1].ss.ff)
                {
                    r2=j;
                    add2(a[r2]);
                    add2(a[l2]);
                }
            }
        }
    }
    cout<<ans<<'\n';
}

Compilation message

team.cpp: In function 'long long int update(long long int, long long int)':
team.cpp:24:1: warning: control reaches end of non-void function [-Wreturn-type]
   24 | }
      | ^
team.cpp: In function 'int main()':
team.cpp:135:38: warning: 'l2' may be used uninitialized in this function [-Wmaybe-uninitialized]
  135 |                     ans=max(ans,query(a[l2]));
      |                                 ~~~~~^~~~~~~

Subtask #1
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1 ms 468 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #2
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1 ms 468 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1 ms 468 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1 ms 468 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #5
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1 ms 468 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #6
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1 ms 468 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #7
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1 ms 468 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -