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Submission #657510

# Submission time Handle Problem Language Result Execution time Memory
657510 2022-11-10T02:06:55 Z Lobo From Hacks to Snitches (BOI21_watchmen) C++17
25 / 100
 6000 ms 94612 KB 
#include <bits/stdc++.h>
using namespace std;
// #define int long long
#define pb push_back
#define mp make_pair
#define fr first
#define sc second
#define all(x) x.begin(),x.end()

const int inf = 1e9+10;
const int maxn = 3e5+10;

int n, m, k;
int szrt[maxn], idrt[maxn], thrt[maxn], isrt[maxn], nxrt[maxn], pvrt[maxn], dlol[maxn];
vector<int> g[maxn], d[maxn];

int32_t main() {
    // freopen("in.in", "r", stdin);

    cin >> n >> m;
    for(int i = 1; i <= m; i++) {
        int u,v; cin >> u >> v;
        g[u].pb(v);
        g[v].pb(u);
    }

    cin >> k;
    for(int i = 1; i <= k; i++) {
        cin >> szrt[i];
        for(int j = 0; j < szrt[i]; j++) {
            int v; cin >> v;
            idrt[v] = i;
            isrt[v] = 1;
            thrt[v] = j;
        }
    }

    szrt[0] = 1;
    for(int i = 1; i <= n; i++) {
        dlol[i] = inf;
        if(isrt[i]) {
            for(int j = 0; j < szrt[idrt[i]]; j++) {
                d[i].pb(inf);
            }
            int u = i;
            for(auto v : g[u]) {
                if(isrt[v] && idrt[u] == idrt[v] && thrt[v] == (thrt[u]+1)%szrt[idrt[u]]) {
                    nxrt[u] = v;
                }
                if(isrt[v] && idrt[u] == idrt[v] && thrt[u] == (thrt[v]+1)%szrt[idrt[u]]) {
                    pvrt[u] = v;
                }
            }
            assert(nxrt[u] != 0);
        }
        else {
            d[i].pb(inf);
        }

    }

    d[1][0] = 0;
    priority_queue<pair<int,pair<int,int>>, vector<pair<int,pair<int,int>>>, greater<pair<int,pair<int,int>>>> pq;
    pq.push(mp(0,mp(1,0)));
    while(pq.size()) {
        int u = pq.top().sc.fr;
        int t = pq.top().sc.sc;
        int dist = pq.top().fr;
        pq.pop();

        if(t != -1 && dist != d[u][t]) continue;
        if(t == -1 && dist != dlol[u]) continue;

        if(t == -1) {
            for(auto v : g[u]) {
                if(isrt[v]) continue;
                int d1 = dlol[u]+1;
                int t1 = 0;
                if(d[v][t1] > d1) {
                    d[v][t1] = d1;
                    pq.push(mp(d[v][t1],mp(v,t1)));
                }
            }
            continue;
        }

        if(isrt[u]) {
            for(auto v : g[u]) {
                // if(v == nxrt[u] || v == pvrt[u]) {
                if(isrt[v]) {
                    int d1 = d[u][t]+1;
                    int t1 = d1%szrt[idrt[v]];
                    // Vou encontrar o guarda em v ou indo para v
                    // indo para v == u é depois de v e em t1 ele vai estar em u
                    if(t1 == thrt[v] || (thrt[u] == (thrt[v]+1)%szrt[idrt[u]] && t1 == thrt[u])) continue;
                    if(d[v][t1] > d1) {
                        d[v][t1] = d1;
                        pq.push(mp(d[v][t1],mp(v,t1)));
                    }
                }
                
            }
            if(dlol[u] > d[u][t]) {
                dlol[u] = d[u][t];
                pq.push(mp(dlol[u],mp(u,-1)));
            }
        }
        else {
            for(auto v : g[u]) {
                if(isrt[v]) {
                    // d[u][t]+1+i = (thrt[v]+1) MOD
                    // i = trrt[v]-d[u][t] MOD
                    int i = ((thrt[v]-d[u][t])%szrt[idrt[v]]+szrt[idrt[v]])%szrt[idrt[v]];
                    int d1 = d[u][t]+1+i;
                    int t1 = d1%szrt[idrt[v]];
                    if(t1 == thrt[v]) continue;
                    if(d[v][t1] > d1) {
                        d[v][t1] = d1;
                        pq.push(mp(d[v][t1],mp(v,t1)));
                    }
                    d1 = d[u][t]+1;
                    t1 = d1%szrt[idrt[v]];
                    if(t1 == thrt[v]) continue;
                    if(d[v][t1] > d1) {
                        d[v][t1] = d1;
                        pq.push(mp(d[v][t1],mp(v,t1)));
                    }
                }
                else {
                    int d1 = d[u][t]+1;
                    int t1 = 0;
                    if(d[v][t1] > d1) {
                        d[v][t1] = d1;
                        pq.push(mp(d[v][t1],mp(v,t1)));
                    }
                }
            }
        }
    }

    if(d[n][0] == inf) cout << "impossible" << endl;
    else cout << d[n][0] << endl;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 72 ms 15336 KB Output is correct
2 Correct 109 ms 22524 KB Output is correct
3 Correct 152 ms 22068 KB Output is correct
4 Correct 133 ms 22044 KB Output is correct
5 Correct 8 ms 14420 KB Output is correct
6 Correct 106 ms 21868 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 72 ms 15316 KB Output is correct
2 Correct 143 ms 22512 KB Output is correct
3 Correct 107 ms 22036 KB Output is correct
4 Correct 141 ms 22040 KB Output is correct
5 Correct 9 ms 14460 KB Output is correct
6 Correct 117 ms 21836 KB Output is correct
7 Correct 116 ms 21816 KB Output is correct
8 Correct 132 ms 21884 KB Output is correct
9 Correct 114 ms 21840 KB Output is correct
10 Correct 143 ms 22056 KB Output is correct
11 Correct 159 ms 21984 KB Output is correct
12 Correct 139 ms 21864 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 72 ms 15316 KB Output is correct
2 Correct 143 ms 22512 KB Output is correct
3 Correct 107 ms 22036 KB Output is correct
4 Correct 141 ms 22040 KB Output is correct
5 Correct 9 ms 14460 KB Output is correct
6 Correct 117 ms 21836 KB Output is correct
7 Correct 116 ms 21816 KB Output is correct
8 Correct 132 ms 21884 KB Output is correct
9 Correct 114 ms 21840 KB Output is correct
10 Correct 143 ms 22056 KB Output is correct
11 Correct 159 ms 21984 KB Output is correct
12 Correct 139 ms 21864 KB Output is correct
13 Correct 78 ms 15376 KB Output is correct
14 Correct 127 ms 22516 KB Output is correct
15 Correct 149 ms 21936 KB Output is correct
16 Correct 194 ms 22020 KB Output is correct
17 Correct 9 ms 14420 KB Output is correct
18 Correct 141 ms 21884 KB Output is correct
19 Correct 125 ms 21872 KB Output is correct
20 Correct 132 ms 21864 KB Output is correct
21 Correct 138 ms 21792 KB Output is correct
22 Correct 140 ms 22132 KB Output is correct
23 Correct 140 ms 21872 KB Output is correct
24 Correct 138 ms 21864 KB Output is correct
25 Correct 2823 ms 66004 KB Output is correct
26 Correct 2621 ms 71216 KB Output is correct
27 Correct 2360 ms 66932 KB Output is correct
28 Correct 2266 ms 70860 KB Output is correct
29 Correct 3245 ms 61352 KB Output is correct
30 Correct 3382 ms 64788 KB Output is correct
31 Correct 2879 ms 71220 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 72 ms 15316 KB Output is correct
2 Correct 143 ms 22512 KB Output is correct
3 Correct 107 ms 22036 KB Output is correct
4 Correct 141 ms 22040 KB Output is correct
5 Correct 9 ms 14460 KB Output is correct
6 Correct 117 ms 21836 KB Output is correct
7 Correct 116 ms 21816 KB Output is correct
8 Correct 132 ms 21884 KB Output is correct
9 Correct 114 ms 21840 KB Output is correct
10 Correct 143 ms 22056 KB Output is correct
11 Correct 159 ms 21984 KB Output is correct
12 Correct 139 ms 21864 KB Output is correct
13 Correct 78 ms 15376 KB Output is correct
14 Correct 127 ms 22516 KB Output is correct
15 Correct 149 ms 21936 KB Output is correct
16 Correct 194 ms 22020 KB Output is correct
17 Correct 9 ms 14420 KB Output is correct
18 Correct 141 ms 21884 KB Output is correct
19 Correct 125 ms 21872 KB Output is correct
20 Correct 132 ms 21864 KB Output is correct
21 Correct 138 ms 21792 KB Output is correct
22 Correct 140 ms 22132 KB Output is correct
23 Correct 140 ms 21872 KB Output is correct
24 Correct 138 ms 21864 KB Output is correct
25 Correct 2823 ms 66004 KB Output is correct
26 Correct 2621 ms 71216 KB Output is correct
27 Correct 2360 ms 66932 KB Output is correct
28 Correct 2266 ms 70860 KB Output is correct
29 Correct 3245 ms 61352 KB Output is correct
30 Correct 3382 ms 64788 KB Output is correct
31 Correct 2879 ms 71220 KB Output is correct
32 Correct 78 ms 15372 KB Output is correct
33 Correct 144 ms 22608 KB Output is correct
34 Correct 123 ms 21964 KB Output is correct
35 Correct 175 ms 22044 KB Output is correct
36 Correct 9 ms 14420 KB Output is correct
37 Correct 136 ms 21892 KB Output is correct
38 Correct 129 ms 21952 KB Output is correct
39 Correct 137 ms 21852 KB Output is correct
40 Correct 127 ms 21900 KB Output is correct
41 Correct 135 ms 22112 KB Output is correct
42 Correct 121 ms 21916 KB Output is correct
43 Correct 129 ms 21928 KB Output is correct
44 Correct 2928 ms 65932 KB Output is correct
45 Correct 2637 ms 71232 KB Output is correct
46 Correct 2590 ms 66928 KB Output is correct
47 Correct 2243 ms 70876 KB Output is correct
48 Correct 3327 ms 61408 KB Output is correct
49 Correct 4034 ms 64940 KB Output is correct
50 Correct 2792 ms 71296 KB Output is correct
51 Correct 3119 ms 79900 KB Output is correct
52 Correct 3163 ms 94612 KB Output is correct
53 Correct 2937 ms 78304 KB Output is correct
54 Correct 2402 ms 64008 KB Output is correct
55 Execution timed out 6058 ms 80832 KB Time limit exceeded
56 Halted 0 ms 0 KB -

Subtask #5
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 72 ms 15336 KB Output is correct
2 Correct 109 ms 22524 KB Output is correct
3 Correct 152 ms 22068 KB Output is correct
4 Correct 133 ms 22044 KB Output is correct
5 Correct 8 ms 14420 KB Output is correct
6 Correct 106 ms 21868 KB Output is correct
7 Correct 72 ms 15316 KB Output is correct
8 Correct 143 ms 22512 KB Output is correct
9 Correct 107 ms 22036 KB Output is correct
10 Correct 141 ms 22040 KB Output is correct
11 Correct 9 ms 14460 KB Output is correct
12 Correct 117 ms 21836 KB Output is correct
13 Correct 116 ms 21816 KB Output is correct
14 Correct 132 ms 21884 KB Output is correct
15 Correct 114 ms 21840 KB Output is correct
16 Correct 143 ms 22056 KB Output is correct
17 Correct 159 ms 21984 KB Output is correct
18 Correct 139 ms 21864 KB Output is correct
19 Correct 7 ms 14420 KB Output is correct
20 Correct 7 ms 14420 KB Output is correct
21 Correct 15 ms 14424 KB Output is correct
22 Correct 89 ms 15368 KB Output is correct
23 Correct 137 ms 22476 KB Output is correct
24 Correct 119 ms 21960 KB Output is correct
25 Correct 149 ms 22040 KB Output is correct
26 Correct 10 ms 14420 KB Output is correct
27 Correct 124 ms 21872 KB Output is correct
28 Correct 128 ms 21988 KB Output is correct
29 Correct 139 ms 21848 KB Output is correct
30 Correct 121 ms 21816 KB Output is correct
31 Correct 135 ms 22144 KB Output is correct
32 Correct 117 ms 21984 KB Output is correct
33 Correct 124 ms 21852 KB Output is correct
34 Correct 3333 ms 66084 KB Output is correct
35 Correct 3080 ms 62436 KB Output is correct
36 Correct 2842 ms 62520 KB Output is correct
37 Incorrect 2420 ms 67540 KB Output isn't correct
38 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 72 ms 15336 KB Output is correct
2 Correct 109 ms 22524 KB Output is correct
3 Correct 152 ms 22068 KB Output is correct
4 Correct 133 ms 22044 KB Output is correct
5 Correct 8 ms 14420 KB Output is correct
6 Correct 106 ms 21868 KB Output is correct
7 Correct 72 ms 15316 KB Output is correct
8 Correct 143 ms 22512 KB Output is correct
9 Correct 107 ms 22036 KB Output is correct
10 Correct 141 ms 22040 KB Output is correct
11 Correct 9 ms 14460 KB Output is correct
12 Correct 117 ms 21836 KB Output is correct
13 Correct 116 ms 21816 KB Output is correct
14 Correct 132 ms 21884 KB Output is correct
15 Correct 114 ms 21840 KB Output is correct
16 Correct 143 ms 22056 KB Output is correct
17 Correct 159 ms 21984 KB Output is correct
18 Correct 139 ms 21864 KB Output is correct
19 Correct 78 ms 15376 KB Output is correct
20 Correct 127 ms 22516 KB Output is correct
21 Correct 149 ms 21936 KB Output is correct
22 Correct 194 ms 22020 KB Output is correct
23 Correct 9 ms 14420 KB Output is correct
24 Correct 141 ms 21884 KB Output is correct
25 Correct 125 ms 21872 KB Output is correct
26 Correct 132 ms 21864 KB Output is correct
27 Correct 138 ms 21792 KB Output is correct
28 Correct 140 ms 22132 KB Output is correct
29 Correct 140 ms 21872 KB Output is correct
30 Correct 138 ms 21864 KB Output is correct
31 Correct 2823 ms 66004 KB Output is correct
32 Correct 2621 ms 71216 KB Output is correct
33 Correct 2360 ms 66932 KB Output is correct
34 Correct 2266 ms 70860 KB Output is correct
35 Correct 3245 ms 61352 KB Output is correct
36 Correct 3382 ms 64788 KB Output is correct
37 Correct 2879 ms 71220 KB Output is correct
38 Correct 7 ms 14420 KB Output is correct
39 Correct 7 ms 14420 KB Output is correct
40 Correct 15 ms 14424 KB Output is correct
41 Correct 89 ms 15368 KB Output is correct
42 Correct 137 ms 22476 KB Output is correct
43 Correct 119 ms 21960 KB Output is correct
44 Correct 149 ms 22040 KB Output is correct
45 Correct 10 ms 14420 KB Output is correct
46 Correct 124 ms 21872 KB Output is correct
47 Correct 128 ms 21988 KB Output is correct
48 Correct 139 ms 21848 KB Output is correct
49 Correct 121 ms 21816 KB Output is correct
50 Correct 135 ms 22144 KB Output is correct
51 Correct 117 ms 21984 KB Output is correct
52 Correct 124 ms 21852 KB Output is correct
53 Correct 3333 ms 66084 KB Output is correct
54 Correct 3080 ms 62436 KB Output is correct
55 Correct 2842 ms 62520 KB Output is correct
56 Incorrect 2420 ms 67540 KB Output isn't correct
57 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 72 ms 15336 KB Output is correct
2 Correct 109 ms 22524 KB Output is correct
3 Correct 152 ms 22068 KB Output is correct
4 Correct 133 ms 22044 KB Output is correct
5 Correct 8 ms 14420 KB Output is correct
6 Correct 106 ms 21868 KB Output is correct
7 Correct 72 ms 15316 KB Output is correct
8 Correct 143 ms 22512 KB Output is correct
9 Correct 107 ms 22036 KB Output is correct
10 Correct 141 ms 22040 KB Output is correct
11 Correct 9 ms 14460 KB Output is correct
12 Correct 117 ms 21836 KB Output is correct
13 Correct 116 ms 21816 KB Output is correct
14 Correct 132 ms 21884 KB Output is correct
15 Correct 114 ms 21840 KB Output is correct
16 Correct 143 ms 22056 KB Output is correct
17 Correct 159 ms 21984 KB Output is correct
18 Correct 139 ms 21864 KB Output is correct
19 Correct 78 ms 15376 KB Output is correct
20 Correct 127 ms 22516 KB Output is correct
21 Correct 149 ms 21936 KB Output is correct
22 Correct 194 ms 22020 KB Output is correct
23 Correct 9 ms 14420 KB Output is correct
24 Correct 141 ms 21884 KB Output is correct
25 Correct 125 ms 21872 KB Output is correct
26 Correct 132 ms 21864 KB Output is correct
27 Correct 138 ms 21792 KB Output is correct
28 Correct 140 ms 22132 KB Output is correct
29 Correct 140 ms 21872 KB Output is correct
30 Correct 138 ms 21864 KB Output is correct
31 Correct 2823 ms 66004 KB Output is correct
32 Correct 2621 ms 71216 KB Output is correct
33 Correct 2360 ms 66932 KB Output is correct
34 Correct 2266 ms 70860 KB Output is correct
35 Correct 3245 ms 61352 KB Output is correct
36 Correct 3382 ms 64788 KB Output is correct
37 Correct 2879 ms 71220 KB Output is correct
38 Correct 78 ms 15372 KB Output is correct
39 Correct 144 ms 22608 KB Output is correct
40 Correct 123 ms 21964 KB Output is correct
41 Correct 175 ms 22044 KB Output is correct
42 Correct 9 ms 14420 KB Output is correct
43 Correct 136 ms 21892 KB Output is correct
44 Correct 129 ms 21952 KB Output is correct
45 Correct 137 ms 21852 KB Output is correct
46 Correct 127 ms 21900 KB Output is correct
47 Correct 135 ms 22112 KB Output is correct
48 Correct 121 ms 21916 KB Output is correct
49 Correct 129 ms 21928 KB Output is correct
50 Correct 2928 ms 65932 KB Output is correct
51 Correct 2637 ms 71232 KB Output is correct
52 Correct 2590 ms 66928 KB Output is correct
53 Correct 2243 ms 70876 KB Output is correct
54 Correct 3327 ms 61408 KB Output is correct
55 Correct 4034 ms 64940 KB Output is correct
56 Correct 2792 ms 71296 KB Output is correct
57 Correct 3119 ms 79900 KB Output is correct
58 Correct 3163 ms 94612 KB Output is correct
59 Correct 2937 ms 78304 KB Output is correct
60 Correct 2402 ms 64008 KB Output is correct
61 Execution timed out 6058 ms 80832 KB Time limit exceeded
62 Halted 0 ms 0 KB -