oj.uz

Submission #520829

# Submission time Handle Problem Language Result Execution time Memory
520829 2022-01-31T05:57:52 Z byunjaewoo Pyramid Base (IOI08_pyramid_base) C++17
70 / 100
 1331 ms 37216 KB 
/// B>0
#include <bits/stdc++.h>
using namespace std;
using ll=long long;

const int Nmax=30010, S=(1<<20);
int N, M, B, P, ans;
int C[Nmax];
struct Rectangle {int sx, ex, sy, ey;}A[Nmax], t[Nmax];
struct Line {int x, sy, ey, k;};

class LazyPropagation {
public:
    void Update(int l, int r, ll v) {Update(1, 1, S, l, r, v);}
    ll Query(int l, int r) {return Query(1, 1, S, l, r);}
    void init() {fill(Tree, Tree+2*S, 0); fill(Lazy, Lazy+2*S, 0);}
private:
    ll Tree[2*S], Lazy[2*S];
    void Propagate(int node, int s, int e) {
        Tree[node]+=Lazy[node];
        if(s!=e) {
            Lazy[2*node]+=Lazy[node];
            Lazy[2*node+1]+=Lazy[node];
        }
        Lazy[node]=0;
        return;
    }
    void Update(int node, int s, int e, int l, int r, int v) {
        Propagate(node, s, e);
        if(l>e || s>r) return;
        if(l<=s && e<=r) {
            Lazy[node]+=v;
            Propagate(node, s, e);
            return;
        }
        int lch=2*node, rch=lch+1, m=s+e>>1;
        Update(lch, s, m, l, r, v); Update(rch, m+1, e, l, r, v);
        Tree[node]=min(Tree[lch], Tree[rch]);
    }
    ll Query(int node, int s, int e, int l, int r) {
        Propagate(node, s, e);
        if(l>e || s>r) return INT_MAX;
        if(l<=s && e<=r) return Tree[node];
        int lch=2*node, rch=lch+1, m=s+e>>1;
        return min(Query(lch, s, m, l, r), Query(rch, m+1, e, l, r));
    }
}T;

bool chk(int x) {
    vector<Line> V;
    for(int i=1; i<=P; i++) {
        t[i]=A[i];
        t[i].sx=max(1, A[i].sx-x+1);
        t[i].sy=max(1, A[i].sy-x+1);
        V.push_back({t[i].sx, t[i].sy, t[i].ey, C[i]});
        V.push_back({t[i].ex+1, t[i].sy, t[i].ey, -C[i]});
    }
    V.push_back({1, 0, 0, 0});
    sort(V.begin(), V.end(), [](Line a, Line b) {return a.x<b.x;});
    T.init();
    for(int i=0; i<V.size(); i++) {
        if(V[i].x>N-x+1) break;
        T.Update(V[i].sy, V[i].ey, V[i].k);
        int j;
        for(j=i+1; j<V.size() && V[i].x==V[j].x; j++)
            T.Update(V[j].sy, V[j].ey, V[j].k);
        if(T.Query(1, M-x+1)<=B) return true;
        i=j-1;
    }
    return false;
}

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin>>N>>M>>B>>P;
    for(int i=1; i<=P; i++) {
        cin>>A[i].sx>>A[i].sy>>A[i].ex>>A[i].ey>>C[i];
    }
    for(int s=1, e=1000000; s<=e;) {
        int mid=(s+e)/2;
        if(chk(mid)) ans=mid, s=mid+1;
        else e=mid-1;
    }
    cout<<ans;
    return 0;
}

Compilation message

pyramid_base.cpp: In member function 'void LazyPropagation::Update(int, int, int, int, int, int)':
pyramid_base.cpp:36:39: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   36 |         int lch=2*node, rch=lch+1, m=s+e>>1;
      |                                      ~^~
pyramid_base.cpp: In member function 'll LazyPropagation::Query(int, int, int, int, int)':
pyramid_base.cpp:44:39: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   44 |         int lch=2*node, rch=lch+1, m=s+e>>1;
      |                                      ~^~
pyramid_base.cpp: In function 'bool chk(int)':
pyramid_base.cpp:61:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Line>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |     for(int i=0; i<V.size(); i++) {
      |                  ~^~~~~~~~~
pyramid_base.cpp:65:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Line>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   65 |         for(j=i+1; j<V.size() && V[i].x==V[j].x; j++)
      |                    ~^~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 75 ms 33100 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 33100 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 33192 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 87 ms 33348 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 91 ms 33228 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 96 ms 33236 KB Output is correct
2 Correct 107 ms 33228 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 127 ms 33240 KB Output is correct
2 Correct 108 ms 33340 KB Output is correct

Subtask #8
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 105 ms 33760 KB Output is correct
2 Correct 161 ms 33776 KB Output is correct
3 Correct 145 ms 33840 KB Output is correct

Subtask #9
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 355 ms 34676 KB Output is correct
2 Correct 462 ms 34768 KB Output is correct
3 Correct 386 ms 35056 KB Output is correct

Subtask #10
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 437 ms 35552 KB Output is correct
2 Correct 403 ms 35928 KB Output is correct
3 Correct 208 ms 35932 KB Output is correct
4 Correct 534 ms 36136 KB Output is correct

Subtask #11
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 681 ms 36104 KB Output is correct
2 Correct 974 ms 36700 KB Output is correct
3 Correct 451 ms 36920 KB Output is correct

Subtask #12
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 685 ms 36152 KB Output is correct
2 Correct 1255 ms 37044 KB Output is correct
3 Correct 1182 ms 37112 KB Output is correct
4 Correct 1330 ms 37216 KB Output is correct
5 Correct 1331 ms 37124 KB Output is correct
6 Correct 489 ms 37204 KB Output is correct

Subtask #13
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 88 ms 33612 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #14
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 86 ms 33720 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #15
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 90 ms 33640 KB Output isn't correct
2 Halted 0 ms 0 KB -