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답안 #107940

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
107940 2019-04-26T09:38:02 Z someone_aa Pinball (JOI14_pinball) C++17
100 / 100
 667 ms 95516 KB 
#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define mp make_pair
#define P pair<ll,ll>
using namespace std;
const int maxn = 100100;
const ll inf = (1LL<<50);
int n, m;
ll a[maxn], b[maxn],c[maxn], d[maxn], br;
set<ll>st;
map<ll,int>ind;
P tree[12*maxn];

ll dpl[maxn], dpr[maxn];

class node {
public:
    P value = mp(inf, inf);
    ll lbound, rbound;
    node *lchild, *rchild;

    node(ll _lb, ll _rb) {
        lchild = rchild = NULL;
        lbound = _lb;
        rbound = _rb;
    }
    P lvalue() {
        if(lchild == NULL) return mp(inf, inf);
        else return lchild->value;
    }
    P rvalue() {
        if(rchild == NULL) return mp(inf, inf);
        else return rchild->value;
    }
    void update(int uind, bool type, ll val) {
        if(lbound == rbound) {
            if(type == 0) value.first = min(value.first, val);
            else value.second = min(value.second, val);
        }
        else {
            int mid = (lbound + rbound) / 2;

            if(uind <= mid) {
                if(lchild == NULL)
                    lchild = new node(lbound, mid);
                lchild -> update(uind, type, val);
            }
            else {
                if(rchild == NULL)
                    rchild = new node(mid+1, rbound);
                rchild -> update(uind, type, val);
            }

            P lval = lvalue();
            P rval = rvalue();

            value.first = min(lval.first, rval.first);
            value.second = min(lval.second, rval.second);
        }
    }
    P query(int ql, int qr) {
        if(lbound > qr || rbound < ql) return mp(inf, inf);
        else if(lbound >= ql && rbound <= qr) return value;
        else {
            P lval, rval;
            if(lchild == NULL) lval = mp(inf, inf);
            else lval = lchild -> query(ql, qr);

            if(rchild == NULL) rval = mp(inf, inf);
            else rval = rchild -> query(ql, qr);

            return mp(min(lval.first, rval.first), min(lval.second, rval.second));
        }
    }
};

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    
    cin>>n>>m;

    for(int i=0;i<n;i++) {
        cin>>a[i]>>b[i]>>c[i]>>d[i];
    }

    node *root = new node(1, m);

    ll result = LLONG_MAX;
    for(int i=0;i<n;i++) {
        // O(N^2) algorithm
        /*dpl[i] = dpr[i] = inf;
        if(a[i] == 1) {
            dpl[i] = d[i];
        }
        if(b[i] == m) {
            dpr[i] = d[i];
        }

        for(int j=0;j<i;j++) {
            if(c[j] >= a[i] && c[j] <= b[i]) {
                dpl[i] = min(dpl[i], dpl[j] + d[i]);
                dpr[i] = min(dpr[i], dpr[j] + d[i]);
            }
        }*/

        // O(NlogN) algorithm, doesn't work
        //cout<<i<<":\n";
        if(a[i] == 1) {
            dpl[i] = d[i];
            root->update(c[i], 0, dpl[i]);
        }
        else {
            P X = root->query(a[i], b[i]);
            dpl[i] = X.first + d[i];
            //cout<<X.first<<"\n";
            root->update(c[i], 0, dpl[i]);
        }

        if(b[i] == m) {
            dpr[i] = d[i];
            root->update(c[i], 1, dpr[i]);
        }
        else {
            P X = root->query(a[i], b[i]);
            if(X.second == inf) dpr[i] = inf;
            else dpr[i] = X.second + d[i];
            root->update(c[i], 1, dpr[i]);
        }
        //cout<<dpl[i]<<" + "<<dpr[i]<<" - "<<d[i]<<"\n";
        result = min(result, dpl[i] + dpr[i] - d[i]);
    }
    if(result >= inf) {
        cout<<"-1\n";
    }
    else {
        cout<<result<<"\n";
    }

    return 0;
}

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 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 356 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 3 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 356 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 2 ms 512 KB Output is correct
11 Correct 3 ms 532 KB Output is correct
12 Correct 3 ms 640 KB Output is correct
13 Correct 3 ms 640 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 3 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 356 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 2 ms 512 KB Output is correct
11 Correct 3 ms 532 KB Output is correct
12 Correct 3 ms 640 KB Output is correct
13 Correct 3 ms 640 KB Output is correct
14 Correct 3 ms 640 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 2 ms 640 KB Output is correct
17 Correct 6 ms 1280 KB Output is correct
18 Correct 4 ms 512 KB Output is correct
19 Correct 8 ms 1664 KB Output is correct
20 Correct 7 ms 1024 KB Output is correct
21 Correct 3 ms 768 KB Output is correct
22 Correct 6 ms 1536 KB Output is correct
23 Correct 6 ms 1792 KB Output is correct
24 Correct 7 ms 1792 KB Output is correct

Subtask #4
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 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 356 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 2 ms 512 KB Output is correct
11 Correct 3 ms 532 KB Output is correct
12 Correct 3 ms 640 KB Output is correct
13 Correct 3 ms 640 KB Output is correct
14 Correct 3 ms 640 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 2 ms 640 KB Output is correct
17 Correct 6 ms 1280 KB Output is correct
18 Correct 4 ms 512 KB Output is correct
19 Correct 8 ms 1664 KB Output is correct
20 Correct 7 ms 1024 KB Output is correct
21 Correct 3 ms 768 KB Output is correct
22 Correct 6 ms 1536 KB Output is correct
23 Correct 6 ms 1792 KB Output is correct
24 Correct 7 ms 1792 KB Output is correct
25 Correct 35 ms 4444 KB Output is correct
26 Correct 115 ms 16820 KB Output is correct
27 Correct 399 ms 37508 KB Output is correct
28 Correct 418 ms 5924 KB Output is correct
29 Correct 291 ms 36880 KB Output is correct
30 Correct 667 ms 15188 KB Output is correct
31 Correct 636 ms 70156 KB Output is correct
32 Correct 632 ms 57532 KB Output is correct
33 Correct 50 ms 13840 KB Output is correct
34 Correct 232 ms 46328 KB Output is correct
35 Correct 330 ms 95516 KB Output is correct
36 Correct 530 ms 92872 KB Output is correct
37 Correct 503 ms 92764 KB Output is correct
38 Correct 407 ms 92780 KB Output is correct