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Submission #390963

# Submission time Handle Problem Language Result Execution time Memory
390963 2021-04-17T12:45:02 Z IloveN Pyramid Base (IOI08_pyramid_base) C++14
70 / 100
 5000 ms 102756 KB 
#include<bits/stdc++.h>

using namespace std;
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define eb emplace_back
#define all(vr) vr.begin(),vr.end()
#define vi vector<int>
#define vll vector<ll>
#define ui unsigned int
const int N=1e6+10;

struct segment_tree
{
    ui it[N*4],lazy[N*4];
    int n;

    void down(int id)
    {
        ui x=lazy[id];
        lazy[id]=0;
        it[id*2]+=x;
        lazy[id*2]+=x;
        it[id*2+1]+=x;
        lazy[id*2+1]+=x;
    }

    void update(int id,int l,int r,int u,int v,ui x)
    {
        if (l>v || r<u) return;
        if (u<=l && r<=v)
        {
            it[id]+=x;
            lazy[id]+=x;
            return;
        }
        down(id);
        int mid=(l+r)/2;
        update(id*2,l,mid,u,v,x);
        update(id*2+1,mid+1,r,u,v,x);
        it[id]=min(it[id*2],it[id*2+1]);
    }

    void init(int x)
    {
        n=x;
        memset(it,0,sizeof(it));
        memset(lazy,0,sizeof(lazy));
    }

    void upd(int u,int v,ui x) { update(1,1,n,u,v,x);}

    ll get() { return it[1];}
} seg;

struct obs{int x1,x2,y1,y2,c;};
obs a[N];
int n,m,B,p;

struct event{int l,r,x;};
vector<event> vt[N];

bool check(int l)
{
    for (int i=1;i<=m;i++) vt[i].clear();
    for (int i=1;i<=p;i++)
    {
        int x1=max(a[i].x1-l+1,1);
        int y1=max(a[i].y1-l+1,1);
        int x2=min(a[i].x2,m-l+1);
        int y2=min(a[i].y2,n-l+1);
        if (x1>x2 || y1>y2) continue;
        int c=a[i].c;
        vt[x1].pb({y1,y2,c});
        vt[x2+1].pb({y1,y2,-c});
    }
    seg.init(n-l+1);
    for (int i=1;i<=m-l+1;i++)
    {
        for (event e : vt[i]) seg.upd(e.l,e.r,e.x);
        if (seg.get()<=B) return true;
    }
    return false;
}

int main()
{
    //freopen("ss.inp","r",stdin);
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin>>m>>n>>B>>p;
    for (int i=1;i<=p;i++) cin>>a[i].x1>>a[i].y1>>a[i].x2>>a[i].y2>>a[i].c;
    int l=1,r=min(m,n),ans=0;
    while (l<=r)
    {
        int mid=(l+r)/2;
        if (check(mid)) ans=mid,l=mid+1;
        else r=mid-1;
    }
    cout<<ans;
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 50 ms 55188 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 55200 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 55108 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 90 ms 55332 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 117 ms 55536 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 170 ms 55604 KB Output is correct
2 Correct 257 ms 55636 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 273 ms 55732 KB Output is correct
2 Correct 183 ms 55496 KB Output is correct

Subtask #8
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 91 ms 56260 KB Output is correct
2 Correct 132 ms 55744 KB Output is correct
3 Correct 124 ms 55932 KB Output is correct

Subtask #9
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 275 ms 58756 KB Output is correct
2 Correct 449 ms 58556 KB Output is correct
3 Correct 379 ms 58840 KB Output is correct

Subtask #10
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 418 ms 63000 KB Output is correct
2 Correct 138 ms 60048 KB Output is correct
3 Correct 240 ms 57756 KB Output is correct
4 Correct 769 ms 65092 KB Output is correct

Subtask #11
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 718 ms 65592 KB Output is correct
2 Correct 1393 ms 67040 KB Output is correct
3 Correct 289 ms 62968 KB Output is correct

Subtask #12
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 516 ms 65768 KB Output is correct
2 Correct 1756 ms 69388 KB Output is correct
3 Correct 1736 ms 69060 KB Output is correct
4 Correct 1794 ms 69492 KB Output is correct
5 Correct 1861 ms 69432 KB Output is correct
6 Correct 215 ms 63844 KB Output is correct

Subtask #13
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5098 ms 92496 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #14
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5063 ms 96128 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #15
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5074 ms 102756 KB Time limit exceeded
2 Halted 0 ms 0 KB -