oj.uz

Submission #133942

# Submission time Handle Problem Language Result Execution time Memory
133942 2019-07-21T18:41:52 Z duality Wild Boar (JOI18_wild_boar) C++11
47 / 100
 18000 ms 177652 KB 
#include <bits/stdc++.h>
using namespace std;
#define mp make_pair
#define pb push_back
typedef long long int LLI;
typedef vector<int> vi;
typedef pair<int,int> pii;
typedef vector<pii> vpii;

struct edge { int u,v,w; };
vector<edge> edges;
LLI dist[6000][6000];
pair<LLI,int> best[6000][2001][2];
int X[100000];
int main() {
    int i;
    int N,M,T,L;
    int A,B,C,P,Q;
    scanf("%d %d %d %d",&N,&M,&T,&L);
    for (i = 0; i < M; i++) {
        scanf("%d %d %d",&A,&B,&C);
        A--,B--;
        edges.pb((edge){A,B,C});
        edges.pb((edge){B,A,C});
    }
    for (i = 0; i < L; i++) scanf("%d",&X[i]),X[i]--;

    int j,k;
    for (i = 0; i < N; i++) edges.pb((edge){N,i,0});
    for (i = 0; i < edges.size(); i++) fill(dist[i],dist[i]+edges.size(),1e18),dist[i][i] = 0;
    for (i = 0; i < edges.size(); i++) {
        for (j = 0; j < edges.size(); j++) {
            if ((edges[i].v == edges[j].u) && (edges[i].u != edges[j].v)) dist[i][j] = edges[j].w;
        }
    }
    for (k = 0; k < edges.size(); k++) {
        for (i = 0; i < edges.size(); i++) {
            for (j = 0; j < edges.size(); j++) dist[i][j] = min(dist[i][j],dist[i][k]+dist[k][j]);
        }
    }
    //for(i=0;i<2*M;i++){
    //    for(j=0;j<2*M;j++)cout<<dist[i][j]<<" ";
    //    cout<<endl;
    //}
    for (i = 0; i < edges.size(); i++) {
        for (j = 0; j < N+1; j++) best[i][j][0] = best[i][j][1] = mp(1e18,-1);
        for (j = 0; j < edges.size(); j++) {
            pair<LLI,int> p = mp(dist[i][j],j);
            if (p.first <= best[i][edges[j].v][0].first)
                best[i][edges[j].v][1] = best[i][edges[j].v][0],best[i][edges[j].v][0] = p;
            else if (p.first <= best[i][edges[j].v][1].first) best[i][edges[j].v][1] = p;
        }
    }

    for (i = 0; i < T; i++) {
        scanf("%d %d",&P,&Q);
        P--,Q--;
        X[P] = Q;
        int u = X[0];
        LLI d1 = 0,d2 = 0;
        int e1 = u+2*M,e2 = u+2*M;
        for (j = 1; j < L; j++) {
            LLI nd1 = 1e18,nd2 = 1e18;
            int ne1 = -1,ne2 = -1;
            vector<pair<LLI,int> > b;
            for (k = 0; k < 2; k++) {
                if (e1 != -1) b.pb(mp(best[e1][X[j]][k].first+d1,best[e1][X[j]][k].second));
                if (e2 != -1) b.pb(mp(best[e2][X[j]][k].first+d2,best[e2][X[j]][k].second));
                /*if ((e1 != -1) && (best[e1][X[j]][k].first+d1 <= nd1))
                    nd2 = nd1,ne2 = ne1,nd1 = best[e1][X[j]][k].first+d1,ne1 = best[e1][X[j]][k].second;
                else if ((e1 != -1) && (best[e1][X[j]][k].first+d1 <= nd2))
                    nd2 = best[e1][X[j]][k].first+d1,ne2 = best[e1][X[j]][k].second;
                if ((e2 != -1) && (best[e2][X[j]][k].first+d2 <= nd1))
                    nd2 = nd1,ne2 = ne1,nd1 = best[e2][X[j]][k].first+d2,ne1 = best[e2][X[j]][k].second;
                else if ((e2 != -1) && (best[e2][X[j]][k].first+d2 <= nd2))
                    nd2 = best[e2][X[j]][k].first+d2,ne2 = best[e2][X[j]][k].second;*/
            }
            while (b.size() < 4) b.pb(mp(1e18,-1));
            sort(b.begin(),b.end());
            if (b[1].second == b[0].second) {
                if (b[2].second == b[0].second) {
                    if (b[3].second != b[0].second) b[1] = b[3];
                }
                else b[1] = b[2];
            }
            nd1 = min(b[0].first,(LLI) 1e18),ne1 = b[0].second;
            nd2 = min(b[1].first,(LLI) 1e18),ne2 = b[1].second;
            d1 = nd1,e1 = ne1,d2 = nd2,e2 = ne2;
        }
        printf("%lld\n",(d1 > 1e17) ? -1:d1);
    }

    return 0;
}

Compilation message

wild_boar.cpp: In function 'int main()':
wild_boar.cpp:30:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < edges.size(); i++) fill(dist[i],dist[i]+edges.size(),1e18),dist[i][i] = 0;
                 ~~^~~~~~~~~~~~~~
wild_boar.cpp:31:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < edges.size(); i++) {
                 ~~^~~~~~~~~~~~~~
wild_boar.cpp:32:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (j = 0; j < edges.size(); j++) {
                     ~~^~~~~~~~~~~~~~
wild_boar.cpp:36:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (k = 0; k < edges.size(); k++) {
                 ~~^~~~~~~~~~~~~~
wild_boar.cpp:37:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (i = 0; i < edges.size(); i++) {
                     ~~^~~~~~~~~~~~~~
wild_boar.cpp:38:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for (j = 0; j < edges.size(); j++) dist[i][j] = min(dist[i][j],dist[i][k]+dist[k][j]);
                         ~~^~~~~~~~~~~~~~
wild_boar.cpp:45:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < edges.size(); i++) {
                 ~~^~~~~~~~~~~~~~
wild_boar.cpp:47:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (j = 0; j < edges.size(); j++) {
                     ~~^~~~~~~~~~~~~~
wild_boar.cpp:19:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d %d %d",&N,&M,&T,&L);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
wild_boar.cpp:21:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %d",&A,&B,&C);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~
wild_boar.cpp:26:46: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for (i = 0; i < L; i++) scanf("%d",&X[i]),X[i]--;
                             ~~~~~~~~~~~~~~~~~^~~~~~~
wild_boar.cpp:56:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d",&P,&Q);
         ~~~~~^~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 3 ms 508 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 632 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 632 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 632 KB Output is correct
9 Correct 2 ms 632 KB Output is correct
10 Correct 2 ms 632 KB Output is correct
11 Correct 2 ms 632 KB Output is correct
12 Correct 2 ms 636 KB Output is correct
13 Correct 2 ms 632 KB Output is correct
14 Correct 3 ms 632 KB Output is correct
15 Correct 2 ms 632 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 3 ms 632 KB Output is correct
18 Correct 3 ms 504 KB Output is correct
19 Correct 2 ms 632 KB Output is correct
20 Correct 2 ms 632 KB Output is correct
21 Correct 2 ms 504 KB Output is correct
22 Correct 3 ms 504 KB Output is correct
23 Correct 2 ms 504 KB Output is correct
24 Correct 2 ms 504 KB Output is correct
25 Correct 2 ms 504 KB Output is correct

Subtask #2
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 3 ms 508 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 632 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 632 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 632 KB Output is correct
9 Correct 2 ms 632 KB Output is correct
10 Correct 2 ms 632 KB Output is correct
11 Correct 2 ms 632 KB Output is correct
12 Correct 2 ms 636 KB Output is correct
13 Correct 2 ms 632 KB Output is correct
14 Correct 3 ms 632 KB Output is correct
15 Correct 2 ms 632 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 3 ms 632 KB Output is correct
18 Correct 3 ms 504 KB Output is correct
19 Correct 2 ms 632 KB Output is correct
20 Correct 2 ms 632 KB Output is correct
21 Correct 2 ms 504 KB Output is correct
22 Correct 3 ms 504 KB Output is correct
23 Correct 2 ms 504 KB Output is correct
24 Correct 2 ms 504 KB Output is correct
25 Correct 2 ms 504 KB Output is correct
26 Correct 4 ms 1276 KB Output is correct
27 Correct 68 ms 5132 KB Output is correct
28 Correct 70 ms 5132 KB Output is correct
29 Correct 457 ms 12664 KB Output is correct
30 Correct 452 ms 12636 KB Output is correct
31 Correct 450 ms 12664 KB Output is correct
32 Correct 447 ms 12664 KB Output is correct
33 Correct 560 ms 15352 KB Output is correct
34 Correct 555 ms 15224 KB Output is correct
35 Correct 549 ms 15096 KB Output is correct
36 Correct 543 ms 14988 KB Output is correct
37 Correct 557 ms 15224 KB Output is correct
38 Correct 665 ms 17588 KB Output is correct
39 Correct 660 ms 17528 KB Output is correct
40 Correct 664 ms 17656 KB Output is correct
41 Correct 687 ms 17656 KB Output is correct
42 Correct 729 ms 19128 KB Output is correct
43 Correct 812 ms 20472 KB Output is correct
44 Correct 793 ms 20472 KB Output is correct
45 Correct 931 ms 23288 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 3 ms 508 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 632 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 632 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 632 KB Output is correct
9 Correct 2 ms 632 KB Output is correct
10 Correct 2 ms 632 KB Output is correct
11 Correct 2 ms 632 KB Output is correct
12 Correct 2 ms 636 KB Output is correct
13 Correct 2 ms 632 KB Output is correct
14 Correct 3 ms 632 KB Output is correct
15 Correct 2 ms 632 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 3 ms 632 KB Output is correct
18 Correct 3 ms 504 KB Output is correct
19 Correct 2 ms 632 KB Output is correct
20 Correct 2 ms 632 KB Output is correct
21 Correct 2 ms 504 KB Output is correct
22 Correct 3 ms 504 KB Output is correct
23 Correct 2 ms 504 KB Output is correct
24 Correct 2 ms 504 KB Output is correct
25 Correct 2 ms 504 KB Output is correct
26 Correct 4 ms 1276 KB Output is correct
27 Correct 68 ms 5132 KB Output is correct
28 Correct 70 ms 5132 KB Output is correct
29 Correct 457 ms 12664 KB Output is correct
30 Correct 452 ms 12636 KB Output is correct
31 Correct 450 ms 12664 KB Output is correct
32 Correct 447 ms 12664 KB Output is correct
33 Correct 560 ms 15352 KB Output is correct
34 Correct 555 ms 15224 KB Output is correct
35 Correct 549 ms 15096 KB Output is correct
36 Correct 543 ms 14988 KB Output is correct
37 Correct 557 ms 15224 KB Output is correct
38 Correct 665 ms 17588 KB Output is correct
39 Correct 660 ms 17528 KB Output is correct
40 Correct 664 ms 17656 KB Output is correct
41 Correct 687 ms 17656 KB Output is correct
42 Correct 729 ms 19128 KB Output is correct
43 Correct 812 ms 20472 KB Output is correct
44 Correct 793 ms 20472 KB Output is correct
45 Correct 931 ms 23288 KB Output is correct
46 Correct 2174 ms 28996 KB Output is correct
47 Execution timed out 18108 ms 177652 KB Time limit exceeded
48 Halted 0 ms 0 KB -

Subtask #4
0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 3 ms 508 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 632 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 632 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 632 KB Output is correct
9 Correct 2 ms 632 KB Output is correct
10 Correct 2 ms 632 KB Output is correct
11 Correct 2 ms 632 KB Output is correct
12 Correct 2 ms 636 KB Output is correct
13 Correct 2 ms 632 KB Output is correct
14 Correct 3 ms 632 KB Output is correct
15 Correct 2 ms 632 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 3 ms 632 KB Output is correct
18 Correct 3 ms 504 KB Output is correct
19 Correct 2 ms 632 KB Output is correct
20 Correct 2 ms 632 KB Output is correct
21 Correct 2 ms 504 KB Output is correct
22 Correct 3 ms 504 KB Output is correct
23 Correct 2 ms 504 KB Output is correct
24 Correct 2 ms 504 KB Output is correct
25 Correct 2 ms 504 KB Output is correct
26 Correct 4 ms 1276 KB Output is correct
27 Correct 68 ms 5132 KB Output is correct
28 Correct 70 ms 5132 KB Output is correct
29 Correct 457 ms 12664 KB Output is correct
30 Correct 452 ms 12636 KB Output is correct
31 Correct 450 ms 12664 KB Output is correct
32 Correct 447 ms 12664 KB Output is correct
33 Correct 560 ms 15352 KB Output is correct
34 Correct 555 ms 15224 KB Output is correct
35 Correct 549 ms 15096 KB Output is correct
36 Correct 543 ms 14988 KB Output is correct
37 Correct 557 ms 15224 KB Output is correct
38 Correct 665 ms 17588 KB Output is correct
39 Correct 660 ms 17528 KB Output is correct
40 Correct 664 ms 17656 KB Output is correct
41 Correct 687 ms 17656 KB Output is correct
42 Correct 729 ms 19128 KB Output is correct
43 Correct 812 ms 20472 KB Output is correct
44 Correct 793 ms 20472 KB Output is correct
45 Correct 931 ms 23288 KB Output is correct
46 Correct 2174 ms 28996 KB Output is correct
47 Execution timed out 18108 ms 177652 KB Time limit exceeded
48 Halted 0 ms 0 KB -