oj.uz

Submission #147939

# Submission time Handle Problem Language Result Execution time Memory
147939 2019-08-31T08:28:20 Z evpipis trapezoid (balkan11_trapezoid) C++11
100 / 100
 299 ms 19544 KB 
#include <bits/stdc++.h>
using namespace std;

#define fi first
#define se second
#define pb push_back
#define mp make_pair
typedef pair<int, int> ii;

const int len = 1e5+5, mod = 30013;
ii tree[8*len], dp[len];
vector<int> vec;
priority_queue<ii, vector<ii>, greater<ii> > pq;
map<int, int> mym;

struct trapezoid{
    int a1, b1, a2, b2;

    bool operator < (const trapezoid &other) const{
        return (a1 < other.a1);
    }
} tra[len];

ii join(ii a, ii b){
    if (a.fi == b.fi)
        return mp(a.fi, (a.se+b.se)%mod);
    return max(a, b);
}

void upd(int p, int l, int r, int i, ii v){
    tree[p] = join(tree[p], v);

    if (l == r)
        return;

    int mid = (l+r)/2;
    if (i <= mid)
        upd(2*p, l, mid, i, v);
    else
        upd(2*p+1, mid+1, r, i, v);
}

ii ask(int p, int l, int r, int i, int j){
    if (r < i || j < l)
        return mp(0, 0);
    if (i <= l && r <= j)
        return tree[p];

    int mid = (l+r)/2;
    return join(ask(2*p, l, mid, i, j), ask(2*p+1, mid+1, r, i, j));
}

int main(){
    int n, m = 0;
    scanf("%d", &n);
    for (int i = 0; i < n; i++){
        scanf("%d %d %d %d", &tra[i].a1, &tra[i].b1, &tra[i].a2, &tra[i].b2);
        vec.pb(tra[i].a2);
        vec.pb(tra[i].b2);
    }

    sort(vec.begin(), vec.end());
    for (int i = 0; i < 2*n; i++)
        mym[vec[i]] = ++m;

    upd(1, 0, m, 0, mp(0, 1));

    sort(tra, tra+n);
    for (int i = 0; i < n; i++){
        while (!pq.empty()){
            int id = pq.top().se, rig = pq.top().fi;

            if (rig > tra[i].a1)
                break;

            pq.pop();
            upd(1, 0, m, mym[tra[id].b2], dp[id]);
        }

        dp[i] = ask(1, 0, m, 0, mym[tra[i].a2]);
        dp[i].fi++;

        pq.push(mp(tra[i].b1, i));
    }

    ii ans = mp(0, 0);
    for (int i = 0; i < n; i++)
        ans = join(ans, dp[i]);

    printf("%d %d\n", ans.fi, ans.se);
    return 0;
}

Compilation message

trapezoid.cpp: In function 'int main()':
trapezoid.cpp:55:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
trapezoid.cpp:57:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %d %d", &tra[i].a1, &tra[i].b1, &tra[i].a2, &tra[i].b2);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 3 ms 508 KB Output is correct
5 Correct 5 ms 760 KB Output is correct
6 Correct 7 ms 1016 KB Output is correct
7 Correct 8 ms 1144 KB Output is correct
8 Correct 12 ms 1400 KB Output is correct
9 Correct 24 ms 2296 KB Output is correct
10 Correct 41 ms 4484 KB Output is correct
11 Correct 59 ms 5144 KB Output is correct
12 Correct 134 ms 10064 KB Output is correct
13 Correct 164 ms 11628 KB Output is correct
14 Correct 198 ms 15184 KB Output is correct
15 Correct 221 ms 15968 KB Output is correct
16 Correct 274 ms 16748 KB Output is correct
17 Correct 253 ms 17628 KB Output is correct
18 Correct 204 ms 18052 KB Output is correct
19 Correct 262 ms 18408 KB Output is correct
20 Correct 299 ms 19544 KB Output is correct