oj.uz

답안 #117621

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
117621 2019-06-16T19:40:52 Z evpipis Pinball (JOI14_pinball) C++17
100 / 100
 469 ms 69752 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
const int len = 1e5+5;
const ll inf = 1e18;
int lef[len], rig[len], pos[len], cost[len];
ll dp[len][3];

struct node{
    ll mn0, mn1;
    node *left, *right;

    node(ll m0 = inf, ll m1 = inf, node *l = NULL, node *r = NULL){
        mn0 = m0;
        mn1 = m1;
        left = l;
        right = r;
    }
};

typedef node* pnode;
pnode null = new node(), root = new node();

void upd(pnode &t, int l, int r, int i, ll m0, ll m1){
    if (t == null)
        t = new node(m0, m1, null, null);

    t->mn0 = min(t->mn0, m0);
    t->mn1 = min(t->mn1, m1);

    if (l == r)
        return;

    int mid = (l+r)/2;
    if (i <= mid)
        upd(t->left, l, mid, i, m0, m1);
    else
        upd(t->right, mid+1, r, i, m0, m1);
}

node join(node a, node b){
    node c;
    c.mn0 = min(a.mn0, b.mn0);
    c.mn1 = min(a.mn1, b.mn1);
    return c;
}

node ask(pnode t, int l, int r, int i, int j){
    if (r < i || j < l)
        return node();
    if (i <= l && r <= j)
        return *t;

    int mid = (l+r)/2;
    return join(ask(t->left, l, mid, i, j), ask(t->right, mid+1, r, i, j));
}

int main(){
    int n, m;
    scanf("%d %d", &n, &m);
    for (int i = 1; i <= n; i++)
        scanf("%d %d %d %d", &lef[i], &rig[i], &pos[i], &cost[i]);

    null->left = null->right = root = null;
    ll ans = inf;
    for (int i = 1; i <= n; i++){
        ll d0 = ask(root, 1, m, lef[i], rig[i]).mn0+cost[i];
        ll d1 = ask(root, 1, m, lef[i], rig[i]).mn1+cost[i];

        if (lef[i] == 1 && rig[i] == m)
            d0 = d1 = cost[i];
        else if (lef[i] == 1)
            d0 = cost[i];
        else if (rig[i] == m)
            d1 = cost[i];

        ans = min(ans, d0+d1-cost[i]);
        upd(root, 1, m, pos[i], d0, d1);
    }

    if (ans == inf)
        printf("-1\n");
    else
        printf("%lld", ans);
    return 0;
}

Compilation message

pinball.cpp: In function 'int main()':
pinball.cpp:61:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &n, &m);
     ~~~~~^~~~~~~~~~~~~~~~~
pinball.cpp:63:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %d %d", &lef[i], &rig[i], &pos[i], &cost[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 3 ms 556 KB Output is correct
11 Correct 3 ms 512 KB Output is correct
12 Correct 3 ms 512 KB Output is correct
13 Correct 2 ms 512 KB Output is correct
14 Correct 3 ms 640 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 3 ms 556 KB Output is correct
11 Correct 3 ms 512 KB Output is correct
12 Correct 3 ms 512 KB Output is correct
13 Correct 2 ms 512 KB Output is correct
14 Correct 3 ms 640 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 3 ms 512 KB Output is correct
17 Correct 5 ms 1024 KB Output is correct
18 Correct 4 ms 384 KB Output is correct
19 Correct 6 ms 1280 KB Output is correct
20 Correct 5 ms 896 KB Output is correct
21 Correct 3 ms 640 KB Output is correct
22 Correct 5 ms 1152 KB Output is correct
23 Correct 5 ms 1408 KB Output is correct
24 Correct 5 ms 1280 KB Output is correct

Subtask #4
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 3 ms 556 KB Output is correct
11 Correct 3 ms 512 KB Output is correct
12 Correct 3 ms 512 KB Output is correct
13 Correct 2 ms 512 KB Output is correct
14 Correct 3 ms 640 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 3 ms 512 KB Output is correct
17 Correct 5 ms 1024 KB Output is correct
18 Correct 4 ms 384 KB Output is correct
19 Correct 6 ms 1280 KB Output is correct
20 Correct 5 ms 896 KB Output is correct
21 Correct 3 ms 640 KB Output is correct
22 Correct 5 ms 1152 KB Output is correct
23 Correct 5 ms 1408 KB Output is correct
24 Correct 5 ms 1280 KB Output is correct
25 Correct 24 ms 3200 KB Output is correct
26 Correct 85 ms 12408 KB Output is correct
27 Correct 314 ms 26876 KB Output is correct
28 Correct 247 ms 2672 KB Output is correct
29 Correct 221 ms 26744 KB Output is correct
30 Correct 385 ms 9476 KB Output is correct
31 Correct 469 ms 50696 KB Output is correct
32 Correct 451 ms 41360 KB Output is correct
33 Correct 47 ms 9976 KB Output is correct
34 Correct 190 ms 33944 KB Output is correct
35 Correct 307 ms 69752 KB Output is correct
36 Correct 432 ms 67780 KB Output is correct
37 Correct 397 ms 67812 KB Output is correct
38 Correct 380 ms 67632 KB Output is correct