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Submission #401912

# Submission time Handle Problem Language Result Execution time Memory
401912 2021-05-11T01:24:31 Z ja_kingy Pyramid Base (IOI08_pyramid_base) C++14
37 / 100
 5000 ms 31000 KB 
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

typedef pair<int,int> pii;
const int mxP = 4e5;
int m,n,b,p,x1[mxP],y1[mxP],x2[mxP],y2[mxP],c[mxP];
vector<pii> lft, rht;

struct range_add {
    int st[1<<21], lz[1<<21];
    void push(int t) {
        st[t*2] += lz[t];
        st[t*2+1] += lz[t];
        lz[t*2] += lz[t];
        lz[t*2+1] += lz[t];
        lz[t] = 0;
    }
    void upd(int ul, int ur, int v, int t, int l, int r) {
        if (ur <= l || r <= ul) return;
        if (ul <= l && r <= ur) {
            st[t] += v;
            lz[t] += v;
            return;
        }
        int m = l+r>>1;
        push(t);
        upd(ul, ur, v, t*2, l, m);  
        upd(ul, ur, v, t*2+1, m, r);
        st[t] = min(st[t*2], st[t*2+1]);  
    }
};

bool can_do(int sz) {
    range_add st{};
    int l = 0;
    for (auto [x, s]: rht) {
        while (lft[l].first - x <= sz) {
            if (l == lft.size()-1) return 0;
            st.upd(y1[lft[l].second]-sz+1, y2[lft[l].second]+1, c[lft[l].second], 1, 1, n-sz+1);
            l++;
        }
        if (~s) st.upd(y1[s]-sz+1, y2[s]+1, -c[s], 1, 1, n-sz+1);
        if (st.st[1] <= b) return 1;
    }
    return 0;
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cin >> m >> n >> b >> p;
    lft.push_back({m+1, -1});
    rht.push_back({0, -1});
    for (int i = 0; i < p; ++i) {
        cin >> x1[i] >> y1[i] >> x2[i] >> y2[i] >> c[i];
        lft.push_back({x1[i], i});
        rht.push_back({x2[i], i});
    }
    sort(lft.begin(), lft.end());
    sort(rht.begin(), rht.end());
    int lo = 1, hi = min(m,n)+1, mid;
    while (lo != hi) {
        mid = lo+hi>>1;
        if (can_do(mid)) lo = mid+1;
        else hi = mid;
    }
    cout << lo-1;
}

Compilation message

pyramid_base.cpp: In member function 'void range_add::upd(int, int, int, int, int, int)':
pyramid_base.cpp:27:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   27 |         int m = l+r>>1;
      |                 ~^~
pyramid_base.cpp: In function 'bool can_do(int)':
pyramid_base.cpp:38:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   38 |     for (auto [x, s]: rht) {
      |               ^
pyramid_base.cpp:40:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |             if (l == lft.size()-1) return 0;
      |                 ~~^~~~~~~~~~~~~~~
pyramid_base.cpp: In function 'int main()':
pyramid_base.cpp:65:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   65 |         mid = lo+hi>>1;
      |               ~~^~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 16752 KB Output is correct

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 22 ms 16760 KB Output isn't correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 16764 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 40 ms 16780 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 53 ms 16776 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 56 ms 16784 KB Output is correct
2 Correct 76 ms 16784 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 83 ms 16784 KB Output is correct
2 Correct 62 ms 16728 KB Output is correct

Subtask #8
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 17016 KB Output is correct
2 Correct 77 ms 16972 KB Output is correct
3 Correct 128 ms 16972 KB Output is correct

Subtask #9
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 174 ms 17356 KB Output is correct
2 Incorrect 308 ms 17380 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #10
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 230 ms 17680 KB Output is correct
2 Correct 37 ms 17672 KB Output is correct
3 Correct 164 ms 17676 KB Output is correct
4 Incorrect 486 ms 17680 KB Output isn't correct

Subtask #11
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 328 ms 17848 KB Output is correct
2 Correct 801 ms 17864 KB Output is correct
3 Incorrect 123 ms 17848 KB Output isn't correct

Subtask #12
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 239 ms 18024 KB Output is correct
2 Incorrect 1125 ms 18028 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #13
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5037 ms 23940 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 5068 ms 27508 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 5029 ms 31000 KB Time limit exceeded
2 Halted 0 ms 0 KB -