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Submission #220062

# Submission time Handle Problem Language Result Execution time Memory
220062 2020-04-06T21:36:58 Z tatyam Pyramid Base (IOI08_pyramid_base) C++17
80 / 100
 5000 ms 44348 KB 
#include <bits/stdc++.h>
using namespace std;
using uint = unsigned;
using ll = long long;
const int INF = 0x3fffffff;
template<class T, class U> bool chmin(T& a, const U& b){ if(a > b){ a = b; return 1; } return 0; }
#define rep(b) for(ll i = 0; i < b; i++)
#define each(i,a) for(auto&& i : a)
#define all(a) begin(a), end(a)

struct SegTree{
    int n;
    vector<ll> data, lazy;
    SegTree(int n): n(n), data(n * 2), lazy(n * 2){}
    inline ll get() const {
        return data[1];
    }
    inline void add(int l, int r, int val){
        if(l < 0) l = 0;
        if(r > n) r = n;
        l += n;
        r += n;
        int L = l, R = r;
        for(; L < R; L /= 2, R /= 2){
            if(L & 1){
                data[L] += val;
                lazy[L++] += val;
            }
            if(R & 1){
                data[--R] += val;
                lazy[R] += val;
            }
        }
        r--;
        while(l /= 2) data[l] = min(data[l * 2], data[l * 2 | 1]) + lazy[l];
        while(r /= 2) data[r] = min(data[r * 2], data[r * 2 | 1]) + lazy[r];
    }
};
int main(){
    int m, n, b, p;
    scanf("%u %u %u %u", &m, &n, &b, &p);
    using tuplis = array<int, 4>;
    vector<tuplis> in, out;
    rep(p){
        int x1, y1, x2, y2, c;
        scanf("%u %u %u %u %u", &x1, &y1, &x2, &y2, &c);
        x1--; y1--;
        in.push_back({x1, y1, y2, c});
        out.push_back({x2, y1, y2, -c});
    }
    sort(all(in));
    sort(all(out));
    in.push_back({INF, 0, 0, 0});
    out.push_back({INF, 0, 0, 0});
    auto check = [&](int x) -> bool {
        x--;
        SegTree seg(n - x);
        int i1 = 0, i2 = 0, at = 0;
        while(at < m - x){
            while(in[i1][0] - x <= at){
                seg.add(in[i1][1] - x, in[i1][2], in[i1][3]);
                i1++;
            }
            while(out[i2][0] <= at){
                seg.add(out[i2][1] - x, out[i2][2], out[i2][3]);
                i2++;
            }
            if(seg.get() <= b) return 1;
            at = min(in[i1][0] - x, out[i2][0]);
        }
        return 0;
    };
    int ok = 0, ng = min(n, m) + 1;
    while(ng - ok > 1){
        ll cen = (ok + ng) / 2;
        if(check(cen)) ok = cen;
        else ng = cen;
    }
    cout << ok << endl;
}

Compilation message

pyramid_base.cpp: In function 'int main()':
pyramid_base.cpp:41:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%u %u %u %u", &m, &n, &b, &p);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
pyramid_base.cpp:46:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%u %u %u %u %u", &x1, &y1, &x2, &y2, &c);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 384 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 860 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 3344 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 16000 KB Output is correct
2 Correct 324 ms 31872 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 141 ms 29788 KB Output is correct
2 Correct 45 ms 16000 KB Output is correct

Subtask #8
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 768 KB Output is correct
2 Correct 33 ms 992 KB Output is correct
3 Correct 26 ms 1056 KB Output is correct

Subtask #9
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 96 ms 3412 KB Output is correct
2 Correct 161 ms 4140 KB Output is correct
3 Correct 135 ms 4140 KB Output is correct

Subtask #10
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 179 ms 16884 KB Output is correct
2 Correct 28 ms 1276 KB Output is correct
3 Correct 213 ms 32492 KB Output is correct
4 Correct 362 ms 30632 KB Output is correct

Subtask #11
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 372 ms 24796 KB Output is correct
2 Correct 746 ms 32908 KB Output is correct
3 Correct 166 ms 17004 KB Output is correct

Subtask #12
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 262 ms 17132 KB Output is correct
2 Correct 919 ms 32868 KB Output is correct
3 Correct 883 ms 32832 KB Output is correct
4 Correct 943 ms 32980 KB Output is correct
5 Correct 944 ms 32924 KB Output is correct
6 Correct 131 ms 17132 KB Output is correct

Subtask #13
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3513 ms 38048 KB Output is correct
2 Correct 304 ms 8140 KB Output is correct

Subtask #14
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5073 ms 41200 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 5102 ms 44348 KB Time limit exceeded
2 Halted 0 ms 0 KB -