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Submission #1019291

# Submission time Handle Problem Language Result Execution time Memory
1019291 2024-07-10T17:05:38 Z ttamx Pyramid Base (IOI08_pyramid_base) C++17
90 / 100
 5000 ms 95512 KB 
#include<bits/stdc++.h>

using namespace std;

const int N=1e6+5;
const int K=1<<21;
const int INF=INT_MAX/2;

int n,m,b,p;
vector<tuple<int,int,int>> add[N],del[N];

struct SegTree{
    int n,log;
    int t[K],lz[K];
    void init(int _n){
        n=_n;
        for(log=0;(1<<log)<n;log++);
    }
    void apply(int i,int v){
        t[i]+=v,lz[i]+=v;
    }
    void push(int i){
        apply(i*2,lz[i]);
        apply(i*2+1,lz[i]);
        lz[i]=0;
    }
    void pull(int i){
        t[i]=min(t[i*2],t[i*2+1]);
    }
    void build(){
        for(int i=1;i<2*n;i++)t[i]=lz[i]=0;
    }
    void update(int l,int r,int v){
        if(l>r)return;
        l+=n-1,r+=n;
        for(int i=log;i>=1;i--){
            if(((l>>i)<<i)!=l)push(l>>i);
            if(((r>>i)<<i)!=r)push((r-1)>>i);
        }
        for(int l2=l,r2=r;l2<r2;l2>>=1,r2>>=1){
            if(l2&1)apply(l2++,v);
            if(r2&1)apply(--r2,v);
        }
        for(int i=1;i<=log;i++){
            if(((l>>i)<<i)!=l)pull(l>>i);
            if(((r>>i)<<i)!=r)pull((r-1)>>i);
        }
    }
}seg;

bool check(int k){
    seg.build();
    seg.update(1,k-1,INF);
    for(int i=1;i<k;i++)for(auto [l,r,v]:add[i])seg.update(max(l,k),min(r+k-1,n),v);
    for(int i=k;i<=m;i++){
        for(auto [l,r,v]:add[i])seg.update(max(l,k),min(r+k-1,n),v);
        for(auto [l,r,v]:del[i-k])seg.update(max(l,k),min(r+k-1,n),-v);
        if(seg.t[1]<=b)return true;
    }
    return false;
}

int main(){
    cin.tie(nullptr)->sync_with_stdio(false);
    cin >> m >> n >> b >> p;
    for(int i=0;i<p;i++){
        int x1,y1,x2,y2,c;
        cin >> x1 >> y1 >> x2 >> y2 >> c;
        add[x1].emplace_back(y1,y2,c);
        del[x2].emplace_back(y1,y2,c);
    }
    seg.init(n);
    int l=0,r=min(n,m);
    while(l<r){
        int m=(l+r+1)/2;
        if(check(m))l=m;
        else r=m-1;
    }
    cout << l;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 47192 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 47432 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 47448 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 47452 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 49088 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 64 ms 63068 KB Output is correct
2 Correct 93 ms 63068 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 90 ms 63068 KB Output is correct
2 Correct 73 ms 63060 KB Output is correct

Subtask #8
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 47812 KB Output is correct
2 Correct 42 ms 47704 KB Output is correct
3 Correct 52 ms 47844 KB Output is correct

Subtask #9
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 92 ms 50000 KB Output is correct
2 Correct 156 ms 50268 KB Output is correct
3 Correct 135 ms 50008 KB Output is correct

Subtask #10
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 180 ms 64848 KB Output is correct
2 Correct 36 ms 48980 KB Output is correct
3 Correct 88 ms 64148 KB Output is correct
4 Correct 209 ms 64848 KB Output is correct

Subtask #11
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 283 ms 65108 KB Output is correct
2 Correct 403 ms 65168 KB Output is correct
3 Correct 183 ms 65360 KB Output is correct

Subtask #12
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 257 ms 65784 KB Output is correct
2 Correct 609 ms 65620 KB Output is correct
3 Correct 530 ms 65632 KB Output is correct
4 Correct 572 ms 65616 KB Output is correct
5 Correct 567 ms 65664 KB Output is correct
6 Correct 221 ms 65872 KB Output is correct

Subtask #13
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2407 ms 80268 KB Output is correct
2 Correct 423 ms 60248 KB Output is correct

Subtask #14
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3708 ms 88180 KB Output is correct
2 Correct 3317 ms 84928 KB Output is correct
3 Correct 969 ms 79352 KB Output is correct

Subtask #15
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3452 ms 95512 KB Output is correct
2 Execution timed out 5014 ms 93628 KB Time limit exceeded
3 Halted 0 ms 0 KB -