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답안 #564646

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
564646 2022-05-19T12:31:45 Z maomao90 Wild Boar (JOI18_wild_boar) C++17
47 / 100
 5214 ms 1048576 KB 
// Hallelujah, praise the one who set me free
// Hallelujah, death has lost its grip on me
// You have broken every chain, There's salvation in your name
// Jesus Christ, my living hope
#include <bits/stdc++.h> 
using namespace std;

template <class T>
inline bool mnto(T& a, T b) {return a > b ? a = b, 1 : 0;}
template <class T>
inline bool mxto(T& a, T b) {return a < b ? a = b, 1: 0;}
#define REP(i, s, e) for (int i = s; i < e; i++)
#define RREP(i, s, e) for (int i = s; i >= e; i--)
typedef long long ll;
typedef long double ld;
#define FI first
#define SE second
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
typedef tuple<int, int, int> iii;
typedef tuple<ll, ll, ll> tll;
#define ALL(_a) _a.begin(), _a.end()
#define pb push_back
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<ii> vii;
typedef vector<iii> viii;

#ifndef DEBUG
#define cerr if (0) cerr
#endif

const int INF = 1000000005;
const ll LINF = 1000000000000000005ll;
const int MAXN = 2005;
const int MAXL = 100005;
const int BAG = 5;

int n, m, t, l, e;
vi adj[MAXN * 3], radj[MAXN];
int w[MAXN * 3];
int x[MAXL];
ll rd[MAXN][MAXN][BAG];
int rfi[MAXN][MAXN][BAG], rse[MAXN][MAXN][BAG];
ll dp[MAXL][BAG];

int par[MAXN * 3][2];
ll dist[MAXN * 3][MAXN * 3][2];
int fi[MAXN * 3][MAXN * 3], se[MAXN * 3][MAXN * 3];
priority_queue<tll, vector<tll>, greater<tll>> pq;
void dijkstra(int s) {
    REP (i, 0, e) {
        dist[s][i][0] = dist[s][i][1] = LINF;
        fi[s][i] = se[s][i] = -1;
        par[i][0] = par[i][1] = -1;
    }
    dist[s][s][0] = w[s];
    pq.push(tll{w[s], s, 0});
    while (!pq.empty()) {
        auto [d, u, tp] = pq.top(); pq.pop();
        if (d != dist[s][u][tp]) continue;
        for (int v : adj[u]) {
            if (v > n && (v ^ 1) == par[u][tp]) {
                continue;
            }
            ll nd = d + w[v];
            if (mnto(dist[s][v][0], nd)) {
                if (par[v][0] != -1 && par[v][0] != u) {
                    dist[s][v][1] = dist[s][v][0];
                    par[v][1] = par[v][0];
                    pq.push(tll{dist[s][v][1], v, 1});
                }
                pq.push(tll{nd, v, 0});
                fi[s][v] = fi[s][u] == -1 ? v : fi[s][u];
                se[s][v] = u;
                par[v][0] = u;
            } else if (mnto(dist[s][v][1], nd) && par[v][0] != u) {
                pq.push(tll{nd, v, 1});
                par[v][1] = u;
            }
        }
    }
}

int main() {
#ifndef DEBUG
    ios::sync_with_stdio(0), cin.tie(0);
#endif
    cin >> n >> m >> t >> l;
    e = n + 1;
    if (e & 1) {
        e++;
    }
    REP (i, 0, m) {
        int a, b, c; cin >> a >> b >> c;
        w[e] = c;
        adj[a].pb(e);
        adj[e].pb(b);
        radj[a].pb(e++);
        w[e] = c;
        adj[b].pb(e);
        adj[e].pb(a);
        radj[b].pb(e++);
    }
    assert(e < MAXN * 3);
    REP (i, 1, e) {
        dijkstra(i);
    }
    REP (i, 1, n + 1) {
        REP (j, 1, n + 1) {
            if (i == j) continue;
            REP (z, 0, BAG) {
                rd[i][j][z] = LINF;
            }
            rd[i][j][0] = dist[i][j][0];
            rfi[i][j][0] = fi[i][j]; rse[i][j][0] = se[i][j];
            for (int u : radj[i]) {
                for (int v : radj[j]) {
                    v ^= 1;
                    REP (z, 1, 3) {
                        if ((z == 1 && u == fi[i][j]) ||
                                (z == 2 && v == se[i][j])) {
                            continue;
                        }
                        cerr << u << ' ' << v << ' ' << z << '\n';
                        if (mnto(rd[i][j][z], dist[u][v][0])) {
                            rfi[i][j][z] = u;
                            rse[i][j][z] = v;
                        }
                    }
                }
            }
            if (rd[i][j][1] != LINF) {
                for (int u : radj[i]) {
                    for (int v : radj[j]) {
                        v ^= 1;
                        if (u == fi[i][j] || v == rse[i][j][1]) continue;
                        if (mnto(rd[i][j][3], dist[u][v][0])) {
                            rfi[i][j][3] = u;
                            rse[i][j][3] = v;
                        }
                    }
                }
            }
            if (rd[i][j][2] != LINF) {
                for (int u : radj[i]) {
                    for (int v : radj[j]) {
                        v ^= 1;
                        if (u == rfi[i][j][2] || v == se[i][j]) continue;
                        if (mnto(rd[i][j][4], dist[u][v][0])) {
                            rfi[i][j][4] = u;
                            rse[i][j][4] = v;
                        }
                    }
                }
            }
            REP (z, 0, BAG) {
                cerr << i << ' ' << j << ' ' << z << ": " << rd[i][j][z] << ' ' << rfi[i][j][z] << ' ' << rse[i][j][z] << '\n';
            }
            cerr << ' ' << fi[i][j] << ' ' << se[i][j] << '\n';
        }
    }
    x[0] = -1;
    REP (i, 1, l + 1) {
        cin >> x[i];
    }
    while (t--) {
        int p, q; cin >> p >> q;
        x[p] = q;
        REP (j, 0, BAG) {
            dp[1][j] = 0;
        }
        REP (i, 2, l + 1) {
            int p = x[i - 2], u = x[i - 1], v = x[i];
            REP (j, 0, BAG) {
                dp[i][j] = LINF;
                REP (k, 0, BAG) {
                    if (p != -1 && (rse[p][u][k] ^ 1) == rfi[u][v][j]) continue;
                    mnto(dp[i][j], dp[i - 1][k] + rd[u][v][j]);
                }
                cerr << i << ' ' << j << ": " << dp[i][j] << '\n';
            }
        }
        ll ans = LINF;
        REP (j, 0, BAG) {
            mnto(ans, dp[l][j]);
        }
        if (ans >= LINF) {
            ans = -1;
        }
        cout << ans << '\n';
    }
    return 0;
}

Subtask #1
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 724 KB Output is correct
2 Correct 1 ms 852 KB Output is correct
3 Correct 1 ms 852 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 980 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct
8 Correct 1 ms 980 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 1 ms 980 KB Output is correct
11 Correct 1 ms 980 KB Output is correct
12 Correct 1 ms 980 KB Output is correct
13 Correct 1 ms 980 KB Output is correct
14 Correct 1 ms 980 KB Output is correct
15 Correct 1 ms 980 KB Output is correct
16 Correct 1 ms 980 KB Output is correct
17 Correct 1 ms 980 KB Output is correct
18 Correct 1 ms 980 KB Output is correct
19 Correct 1 ms 1108 KB Output is correct
20 Correct 1 ms 1108 KB Output is correct
21 Correct 1 ms 852 KB Output is correct
22 Correct 1 ms 852 KB Output is correct
23 Correct 1 ms 852 KB Output is correct
24 Correct 1 ms 852 KB Output is correct
25 Correct 1 ms 852 KB Output is correct

Subtask #2
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 724 KB Output is correct
2 Correct 1 ms 852 KB Output is correct
3 Correct 1 ms 852 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 980 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct
8 Correct 1 ms 980 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 1 ms 980 KB Output is correct
11 Correct 1 ms 980 KB Output is correct
12 Correct 1 ms 980 KB Output is correct
13 Correct 1 ms 980 KB Output is correct
14 Correct 1 ms 980 KB Output is correct
15 Correct 1 ms 980 KB Output is correct
16 Correct 1 ms 980 KB Output is correct
17 Correct 1 ms 980 KB Output is correct
18 Correct 1 ms 980 KB Output is correct
19 Correct 1 ms 1108 KB Output is correct
20 Correct 1 ms 1108 KB Output is correct
21 Correct 1 ms 852 KB Output is correct
22 Correct 1 ms 852 KB Output is correct
23 Correct 1 ms 852 KB Output is correct
24 Correct 1 ms 852 KB Output is correct
25 Correct 1 ms 852 KB Output is correct
26 Correct 3 ms 2260 KB Output is correct
27 Correct 31 ms 12620 KB Output is correct
28 Correct 21 ms 12620 KB Output is correct
29 Correct 109 ms 27000 KB Output is correct
30 Correct 85 ms 26956 KB Output is correct
31 Correct 100 ms 27068 KB Output is correct
32 Correct 82 ms 26968 KB Output is correct
33 Correct 110 ms 30924 KB Output is correct
34 Correct 114 ms 30932 KB Output is correct
35 Correct 94 ms 30836 KB Output is correct
36 Correct 95 ms 30936 KB Output is correct
37 Correct 111 ms 30868 KB Output is correct
38 Correct 124 ms 35296 KB Output is correct
39 Correct 108 ms 35252 KB Output is correct
40 Correct 122 ms 35284 KB Output is correct
41 Correct 120 ms 35292 KB Output is correct
42 Correct 100 ms 38268 KB Output is correct
43 Correct 117 ms 40188 KB Output is correct
44 Correct 115 ms 40212 KB Output is correct
45 Correct 65 ms 45572 KB Output is correct

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 724 KB Output is correct
2 Correct 1 ms 852 KB Output is correct
3 Correct 1 ms 852 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 980 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct
8 Correct 1 ms 980 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 1 ms 980 KB Output is correct
11 Correct 1 ms 980 KB Output is correct
12 Correct 1 ms 980 KB Output is correct
13 Correct 1 ms 980 KB Output is correct
14 Correct 1 ms 980 KB Output is correct
15 Correct 1 ms 980 KB Output is correct
16 Correct 1 ms 980 KB Output is correct
17 Correct 1 ms 980 KB Output is correct
18 Correct 1 ms 980 KB Output is correct
19 Correct 1 ms 1108 KB Output is correct
20 Correct 1 ms 1108 KB Output is correct
21 Correct 1 ms 852 KB Output is correct
22 Correct 1 ms 852 KB Output is correct
23 Correct 1 ms 852 KB Output is correct
24 Correct 1 ms 852 KB Output is correct
25 Correct 1 ms 852 KB Output is correct
26 Correct 3 ms 2260 KB Output is correct
27 Correct 31 ms 12620 KB Output is correct
28 Correct 21 ms 12620 KB Output is correct
29 Correct 109 ms 27000 KB Output is correct
30 Correct 85 ms 26956 KB Output is correct
31 Correct 100 ms 27068 KB Output is correct
32 Correct 82 ms 26968 KB Output is correct
33 Correct 110 ms 30924 KB Output is correct
34 Correct 114 ms 30932 KB Output is correct
35 Correct 94 ms 30836 KB Output is correct
36 Correct 95 ms 30936 KB Output is correct
37 Correct 111 ms 30868 KB Output is correct
38 Correct 124 ms 35296 KB Output is correct
39 Correct 108 ms 35252 KB Output is correct
40 Correct 122 ms 35284 KB Output is correct
41 Correct 120 ms 35292 KB Output is correct
42 Correct 100 ms 38268 KB Output is correct
43 Correct 117 ms 40188 KB Output is correct
44 Correct 115 ms 40212 KB Output is correct
45 Correct 65 ms 45572 KB Output is correct
46 Correct 304 ms 54796 KB Output is correct
47 Correct 3523 ms 560980 KB Output is correct
48 Correct 4013 ms 664224 KB Output is correct
49 Correct 4428 ms 742848 KB Output is correct
50 Correct 4503 ms 742784 KB Output is correct
51 Correct 4409 ms 742660 KB Output is correct
52 Correct 4777 ms 742736 KB Output is correct
53 Correct 4767 ms 742712 KB Output is correct
54 Correct 4755 ms 742664 KB Output is correct
55 Correct 4866 ms 742660 KB Output is correct
56 Correct 5214 ms 781216 KB Output is correct
57 Correct 4747 ms 821896 KB Output is correct
58 Correct 4943 ms 864084 KB Output is correct
59 Correct 5029 ms 908216 KB Output is correct
60 Correct 5096 ms 954216 KB Output is correct
61 Correct 4982 ms 1002120 KB Output is correct
62 Runtime error 5179 ms 1048576 KB Execution killed with signal 9
63 Halted 0 ms 0 KB -

Subtask #4
0 / 38.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 724 KB Output is correct
2 Correct 1 ms 852 KB Output is correct
3 Correct 1 ms 852 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 980 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct
8 Correct 1 ms 980 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 1 ms 980 KB Output is correct
11 Correct 1 ms 980 KB Output is correct
12 Correct 1 ms 980 KB Output is correct
13 Correct 1 ms 980 KB Output is correct
14 Correct 1 ms 980 KB Output is correct
15 Correct 1 ms 980 KB Output is correct
16 Correct 1 ms 980 KB Output is correct
17 Correct 1 ms 980 KB Output is correct
18 Correct 1 ms 980 KB Output is correct
19 Correct 1 ms 1108 KB Output is correct
20 Correct 1 ms 1108 KB Output is correct
21 Correct 1 ms 852 KB Output is correct
22 Correct 1 ms 852 KB Output is correct
23 Correct 1 ms 852 KB Output is correct
24 Correct 1 ms 852 KB Output is correct
25 Correct 1 ms 852 KB Output is correct
26 Correct 3 ms 2260 KB Output is correct
27 Correct 31 ms 12620 KB Output is correct
28 Correct 21 ms 12620 KB Output is correct
29 Correct 109 ms 27000 KB Output is correct
30 Correct 85 ms 26956 KB Output is correct
31 Correct 100 ms 27068 KB Output is correct
32 Correct 82 ms 26968 KB Output is correct
33 Correct 110 ms 30924 KB Output is correct
34 Correct 114 ms 30932 KB Output is correct
35 Correct 94 ms 30836 KB Output is correct
36 Correct 95 ms 30936 KB Output is correct
37 Correct 111 ms 30868 KB Output is correct
38 Correct 124 ms 35296 KB Output is correct
39 Correct 108 ms 35252 KB Output is correct
40 Correct 122 ms 35284 KB Output is correct
41 Correct 120 ms 35292 KB Output is correct
42 Correct 100 ms 38268 KB Output is correct
43 Correct 117 ms 40188 KB Output is correct
44 Correct 115 ms 40212 KB Output is correct
45 Correct 65 ms 45572 KB Output is correct
46 Correct 304 ms 54796 KB Output is correct
47 Correct 3523 ms 560980 KB Output is correct
48 Correct 4013 ms 664224 KB Output is correct
49 Correct 4428 ms 742848 KB Output is correct
50 Correct 4503 ms 742784 KB Output is correct
51 Correct 4409 ms 742660 KB Output is correct
52 Correct 4777 ms 742736 KB Output is correct
53 Correct 4767 ms 742712 KB Output is correct
54 Correct 4755 ms 742664 KB Output is correct
55 Correct 4866 ms 742660 KB Output is correct
56 Correct 5214 ms 781216 KB Output is correct
57 Correct 4747 ms 821896 KB Output is correct
58 Correct 4943 ms 864084 KB Output is correct
59 Correct 5029 ms 908216 KB Output is correct
60 Correct 5096 ms 954216 KB Output is correct
61 Correct 4982 ms 1002120 KB Output is correct
62 Runtime error 5179 ms 1048576 KB Execution killed with signal 9
63 Halted 0 ms 0 KB -