oj.uz

답안 #79800

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
79800 2018-10-16T13:27:33 Z aquablitz11 사다리꼴 (balkan11_trapezoid) C++14
80 / 100
 500 ms 46548 KB 
#include <bits/stdc++.h>
using namespace std;

using pii = pair<int, int>;
using piipii = pair<pii, pii>;
using pipii = pair<int, pii>;
#define all(x) x.begin(), x.end()
#define mp make_pair
#define F first
#define S second

pii comb(pii a, pii b) {
    if (a.F == b.F) {
        a.S += b.S;
        if (a.S >= 30013) a.S -= 30013;
        return a;
    }
    else
        return max(a, b);
}

const int N = 1<<17;
int n;
piipii A[N];

struct data {
    vector<int> key;
    vector<pii> val;
    data() {
        key.clear();
        val.clear();
    }
    data(int x) {
        key.push_back(x);
        val = vector<pii>(2, pii(0, 0));
    }
    data operator+(data b) {
        data ret;
        merge(all(key), all(b.key), back_inserter(ret.key));
        ret.val.resize(val.size()+b.val.size()-1, pii(0, 0));
        return ret;
    }
} seg[N<<1];

void build(int p=1, int b=0, int e=n-1) {
    if (b == e) {
        seg[p] = data(A[b].F.S);
        return;
    }
    int m = (b+e)/2;
    build(p<<1, b, m);
    build(p<<1|1, m+1, e);
    seg[p] = seg[p<<1]+seg[p<<1|1];
}

pii query(int x, int y, int p=1, int b=0, int e=n-1) {
    int l = x, r = n-1;
    if (b > r || e < l)
        return pii(0, 0);
    if (b >= l && e <= r) {
        int i = lower_bound(all(seg[p].key), y)-seg[p].key.begin()+1;
        pii ans(0, 0);
        for (; i <= seg[p].key.size(); i += i&-i)
            ans = comb(ans, seg[p].val[i]);
        return ans;
    }
    int m = (b+e)/2;
    pii q1 = query(x, y, p<<1, b, m);
    pii q2 = query(x, y, p<<1|1, m+1, e);
    return comb(q1, q2);
}

inline void updateft(int p, int i, pii v) {
    for (; i > 0; i -= i&-i)
        seg[p].val[i] = comb(seg[p].val[i], v);
}

void update(int x, int y, pii v, int p=1, int b=0, int e=n-1) {
    if (b > x || e < x)
        return;
    updateft(p, lower_bound(all(seg[p].key), y)-seg[p].key.begin()+1, v);
    if (b == e)
        return;
    int m = (b+e)/2;
    if (x <= m)
        update(x, y, v, p<<1, b, m);
    else
        update(x, y, v, p<<1|1, m+1, e);
}

int pos(int x) {
    return lower_bound(A, A+n, mp(mp(x, 0), mp(0, 0)))-A;
}

int main()
{
    scanf("%d", &n);
    for (int i = 0; i < n; ++i)
        scanf("%d%d%d%d", &A[i].F.F, &A[i].S.F, &A[i].F.S, &A[i].S.S);
    sort(A, A+n);
    build();

    pii ans(0, 0);
    for (int i = n-1; i >= 0; --i) {
        int ul = A[i].F.F, dl = A[i].F.S;
        int ur = A[i].S.F, dr = A[i].S.S;
        pii best = query(pos(ur), dr);
        ++best.F;
        if (best == pii(1, 0))
            best.S = 1;
        ans = comb(ans, best);
        update(pos(ul), dl, best);
        //printf("ul=%d, dl=%d, update to %d %d\n", ul, dl, best.F, best.S);
    }
    printf("%d %d\n", ans.F, ans.S);

    return 0;
}

Compilation message

trapezoid.cpp: In function 'pii query(int, int, int, int, int)':
trapezoid.cpp:63:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (; i <= seg[p].key.size(); i += i&-i)
                ~~^~~~~~~~~~~~~~~~~~~~
trapezoid.cpp: In function 'int main()':
trapezoid.cpp:97:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
trapezoid.cpp:99:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d%d%d", &A[i].F.F, &A[i].S.F, &A[i].F.S, &A[i].S.S);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
80.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 12664 KB Output is correct
2 Correct 13 ms 12788 KB Output is correct
3 Correct 17 ms 12964 KB Output is correct
4 Correct 15 ms 13032 KB Output is correct
5 Correct 19 ms 13408 KB Output is correct
6 Correct 22 ms 13728 KB Output is correct
7 Correct 26 ms 13884 KB Output is correct
8 Correct 32 ms 14268 KB Output is correct
9 Correct 54 ms 15932 KB Output is correct
10 Correct 88 ms 19408 KB Output is correct
11 Correct 118 ms 20688 KB Output is correct
12 Correct 262 ms 29100 KB Output is correct
13 Correct 352 ms 31940 KB Output is correct
14 Correct 455 ms 37052 KB Output is correct
15 Correct 453 ms 38988 KB Output is correct
16 Execution timed out 508 ms 40488 KB Time limit exceeded
17 Execution timed out 528 ms 42060 KB Time limit exceeded
18 Correct 408 ms 43692 KB Output is correct
19 Execution timed out 508 ms 45152 KB Time limit exceeded
20 Execution timed out 607 ms 46548 KB Time limit exceeded