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답안 #1109269

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1109269 2024-11-06T10:02:24 Z Neco_arc Passport (JOI23_passport) C++17
100 / 100
 596 ms 27136 KB 
#include <bits/stdc++.h>

#define ll long long
#define name "Tickets"
#define _left id * 2, l, mid
#define _right id * 2 + 1, mid + 1, r
#define fi(i, a, b)  for(int i = a; i <= b; ++i)
#define fid(i, a, b) for(int i = a; i >= b; --i)
#define maxn (int) (2e5 + 7)

using namespace std;

int n, k;
struct dl { int c, w, l, r; } a[maxn];
ll dist[3][2 * maxn];

struct IT {
    int st[4 * maxn];

    void build(int id = 1, int l = 1, int r = k) {
        if(l == r) return st[id] = a[l].r, void();
        int mid = (l + r) >> 1;
        build(_left), build(_right);

        st[id] = max(st[id * 2], st[id * 2 + 1]);
    }

    void get(int x, vector<int> &P, int id = 1, int l = 1, int r = k) {
        if(a[l].l > x || st[id] < x) return;
        if(l == r) {
            P.push_back(l), st[id] = -1;
            return ;
        }

        int mid = (l + r) >> 1;
        get(x, P, _left), get(x, P, _right);

        st[id] = max(st[id * 2], st[id * 2 + 1]);
    }

} St;

void DJK(ll *dist) {
    priority_queue<pair<ll, int>, vector<pair<ll, int>>, greater<pair<ll, int>> > q;
    fi(i, 1, k) { /// corner case
        dist[a[i].c] = min(dist[a[i].c], dist[n + i] + a[i].w);
    }

    St.build();
    fi(i, 1, n) if(dist[i] < 1e18) q.push({dist[i], i});

    while(!q.empty()) {
        int u; ll g; tie(g, u) = q.top(); q.pop();
        if(dist[u] < g) continue;

        vector<int> P; St.get(u, P);

        for(int x : P) {
            dist[x + n] = dist[u];
            if(dist[a[x].c] > dist[x + n] + a[x].w) {
                dist[a[x].c] = dist[x + n] + a[x].w;
                q.push({ dist[a[x].c], a[x].c });
            }
        }
    }

}

void solve() {

    cin >> n ; k = n;

    fi(i, 1, k) {
        a[i].c = i, a[i].w = 1;
        cin >> a[i].l >> a[i].r;
    }

    sort(a + 1, a + 1 + k, [](dl x, dl y) {
        return x.l < y.l;
    });


    memset(dist, 60, sizeof dist);
    dist[0][1] = dist[1][n] = 0;

    DJK(dist[0]), DJK(dist[1]);

    fi(i, 1, n + k) dist[2][i] = dist[0][i] + dist[1][i];
    DJK(dist[2]);

    int q; cin >> q;
    fi(_, 1, q) {
        int i; cin >> i;
        cout << (dist[2][i] < 1e18 ? dist[2][i] : -1) << '\n';
    }

}

int main() {

    ios_base::sync_with_stdio();
    cin.tie(), cout.tie();

    if(fopen(name".inp", "r")) {
        freopen(name".inp", "r", stdin);
        freopen(name".out", "w", stdout);
    }

    solve();

}

Compilation message

passport.cpp: In function 'int main()':
passport.cpp:105:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  105 |         freopen(name".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
passport.cpp:106:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  106 |         freopen(name".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 12624 KB Output is correct
2 Correct 2 ms 12792 KB Output is correct
3 Correct 2 ms 12624 KB Output is correct
4 Correct 260 ms 26644 KB Output is correct
5 Correct 193 ms 24760 KB Output is correct
6 Correct 167 ms 24764 KB Output is correct
7 Correct 136 ms 26048 KB Output is correct
8 Correct 80 ms 20516 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 12740 KB Output is correct
2 Correct 3 ms 12624 KB Output is correct
3 Correct 2 ms 12624 KB Output is correct
4 Correct 2 ms 12792 KB Output is correct
5 Correct 3 ms 12624 KB Output is correct
6 Correct 2 ms 12624 KB Output is correct
7 Correct 2 ms 12792 KB Output is correct
8 Correct 2 ms 12796 KB Output is correct
9 Correct 3 ms 12624 KB Output is correct
10 Correct 2 ms 12624 KB Output is correct
11 Correct 3 ms 12624 KB Output is correct
12 Correct 3 ms 12624 KB Output is correct
13 Correct 3 ms 12624 KB Output is correct
14 Correct 3 ms 12624 KB Output is correct
15 Correct 2 ms 12636 KB Output is correct

Subtask #3
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 12740 KB Output is correct
2 Correct 3 ms 12624 KB Output is correct
3 Correct 2 ms 12624 KB Output is correct
4 Correct 2 ms 12792 KB Output is correct
5 Correct 3 ms 12624 KB Output is correct
6 Correct 2 ms 12624 KB Output is correct
7 Correct 2 ms 12792 KB Output is correct
8 Correct 2 ms 12796 KB Output is correct
9 Correct 3 ms 12624 KB Output is correct
10 Correct 2 ms 12624 KB Output is correct
11 Correct 3 ms 12624 KB Output is correct
12 Correct 3 ms 12624 KB Output is correct
13 Correct 3 ms 12624 KB Output is correct
14 Correct 3 ms 12624 KB Output is correct
15 Correct 2 ms 12636 KB Output is correct
16 Correct 5 ms 12880 KB Output is correct
17 Correct 4 ms 12924 KB Output is correct
18 Correct 5 ms 12880 KB Output is correct
19 Correct 4 ms 12880 KB Output is correct
20 Correct 5 ms 12768 KB Output is correct
21 Correct 4 ms 12928 KB Output is correct
22 Correct 3 ms 12880 KB Output is correct
23 Correct 5 ms 12880 KB Output is correct
24 Correct 4 ms 12880 KB Output is correct

Subtask #4
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 12740 KB Output is correct
2 Correct 3 ms 12624 KB Output is correct
3 Correct 2 ms 12624 KB Output is correct
4 Correct 2 ms 12792 KB Output is correct
5 Correct 3 ms 12624 KB Output is correct
6 Correct 2 ms 12624 KB Output is correct
7 Correct 2 ms 12792 KB Output is correct
8 Correct 2 ms 12796 KB Output is correct
9 Correct 3 ms 12624 KB Output is correct
10 Correct 2 ms 12624 KB Output is correct
11 Correct 3 ms 12624 KB Output is correct
12 Correct 3 ms 12624 KB Output is correct
13 Correct 3 ms 12624 KB Output is correct
14 Correct 3 ms 12624 KB Output is correct
15 Correct 2 ms 12636 KB Output is correct
16 Correct 5 ms 12880 KB Output is correct
17 Correct 4 ms 12924 KB Output is correct
18 Correct 5 ms 12880 KB Output is correct
19 Correct 4 ms 12880 KB Output is correct
20 Correct 5 ms 12768 KB Output is correct
21 Correct 4 ms 12928 KB Output is correct
22 Correct 3 ms 12880 KB Output is correct
23 Correct 5 ms 12880 KB Output is correct
24 Correct 4 ms 12880 KB Output is correct
25 Correct 3 ms 12624 KB Output is correct
26 Correct 2 ms 12624 KB Output is correct
27 Correct 9 ms 12780 KB Output is correct
28 Correct 9 ms 12940 KB Output is correct
29 Correct 9 ms 12880 KB Output is correct
30 Correct 8 ms 12888 KB Output is correct
31 Correct 8 ms 12880 KB Output is correct

Subtask #5
46.0 / 46.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 12624 KB Output is correct
2 Correct 2 ms 12792 KB Output is correct
3 Correct 2 ms 12624 KB Output is correct
4 Correct 260 ms 26644 KB Output is correct
5 Correct 193 ms 24760 KB Output is correct
6 Correct 167 ms 24764 KB Output is correct
7 Correct 136 ms 26048 KB Output is correct
8 Correct 80 ms 20516 KB Output is correct
9 Correct 3 ms 12740 KB Output is correct
10 Correct 3 ms 12624 KB Output is correct
11 Correct 2 ms 12624 KB Output is correct
12 Correct 2 ms 12792 KB Output is correct
13 Correct 3 ms 12624 KB Output is correct
14 Correct 2 ms 12624 KB Output is correct
15 Correct 2 ms 12792 KB Output is correct
16 Correct 2 ms 12796 KB Output is correct
17 Correct 3 ms 12624 KB Output is correct
18 Correct 2 ms 12624 KB Output is correct
19 Correct 3 ms 12624 KB Output is correct
20 Correct 3 ms 12624 KB Output is correct
21 Correct 3 ms 12624 KB Output is correct
22 Correct 3 ms 12624 KB Output is correct
23 Correct 2 ms 12636 KB Output is correct
24 Correct 5 ms 12880 KB Output is correct
25 Correct 4 ms 12924 KB Output is correct
26 Correct 5 ms 12880 KB Output is correct
27 Correct 4 ms 12880 KB Output is correct
28 Correct 5 ms 12768 KB Output is correct
29 Correct 4 ms 12928 KB Output is correct
30 Correct 3 ms 12880 KB Output is correct
31 Correct 5 ms 12880 KB Output is correct
32 Correct 4 ms 12880 KB Output is correct
33 Correct 3 ms 12624 KB Output is correct
34 Correct 2 ms 12624 KB Output is correct
35 Correct 9 ms 12780 KB Output is correct
36 Correct 9 ms 12940 KB Output is correct
37 Correct 9 ms 12880 KB Output is correct
38 Correct 8 ms 12888 KB Output is correct
39 Correct 8 ms 12880 KB Output is correct
40 Correct 596 ms 27136 KB Output is correct
41 Correct 524 ms 25016 KB Output is correct
42 Correct 537 ms 25008 KB Output is correct
43 Correct 505 ms 26796 KB Output is correct
44 Correct 532 ms 25016 KB Output is correct
45 Correct 503 ms 21948 KB Output is correct
46 Correct 198 ms 18952 KB Output is correct
47 Correct 516 ms 26596 KB Output is correct
48 Correct 468 ms 22548 KB Output is correct