oj.uz

답안 #878583

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
878583 2023-11-24T20:16:50 Z MasterTaster Paths (BOI18_paths) C++14
70 / 100
 506 ms 121724 KB 
#include <iostream>
#include <vector>

#define ll long long
#define pii pair<int, int>
#define xx first
#define yy second
#define pb push_back
#define MAXN 300010
#define MAXK 6

using namespace std;

int n, m, k, a[MAXN];
ll cnt[MAXN][MAXK], ress, cntt[MAXN][MAXK][MAXK];
vector<pii> grane;
vector<int> g[MAXN];

int main() {
    cin>>n>>m>>k;

    for (int i=1; i<=n; i++)
        cin>>a[i];

    for (int i=0; i<m; i++)
    {
        int u, v; cin>>u>>v;
        grane.pb({u, v});
        g[u].pb(v); g[v].pb(u);
        cnt[u][a[v]]++;
        cnt[v][a[u]]++;
    }

    for (auto par:grane)
    {
        int u=par.xx, v=par.yy;
        if (a[u]==a[v]) continue;
        ress+=2;
        vector<int> boje;
        for (int i=1; i<=5; i++) if (a[u]!=i && a[v]!=i) boje.pb(i);
        int c1, c2, c3;
        c1=boje[0]; c2=boje[1]; c3=boje[2];
        ress+=2*((cnt[u][c1]*cnt[v][c2])+(cnt[u][c2]*cnt[v][c1]) + (cnt[u][c1]*cnt[v][c3])+(cnt[u][c3]*cnt[v][c1]) + (cnt[u][c3]*cnt[v][c2])+(cnt[u][c2]*cnt[v][c3]))
                +cnt[u][c1]+cnt[u][c2]+cnt[u][c3]+cnt[v][c1]+cnt[v][c2]+cnt[v][c3];
        //cout<<u<<" "<<v<<" "<<ress<<endl;
    }

    for (int u=1; u<=n; u++)
    {
        for (auto v:g[u])
        {
            if (a[u]==a[v]) continue;
            vector<int> boje;
            for (int i=1; i<=5; i++)
                if (a[u]!=i && a[v]!=i) boje.pb(i);
            for (auto c:boje)
                cntt[u][a[v]][c]+=cnt[v][c];
        }
    }

    ll press=0;
    for (int u=1; u<=n; u++)
    {
        vector<int> boje;
        for (int i=1; i<=5; i++) if (a[u]!=i) boje.pb(i);

        for (int i=0; i<boje.size(); i++)
        {
            for (int j=0; j<boje.size(); j++)
            {
                if (i==j) continue;
                int c1=boje[i], c2=boje[j], c3=-1, c4=-1;
                for (int k=0; k<boje.size(); k++) { if (k!=i && k!=j) { if (c3==-1) c3=boje[k]; else c4=boje[k]; } }
                press+=(cntt[u][c1][c2]*cntt[u][c3][c4]+cntt[u][c1][c2]*cntt[u][c4][c3]);
                //cout<<u<<" "<<" "<<c1<<" "<<c2<<" "<<c3<<" "<<c4<<": "<<press<<endl;

            }
        }
    }
    press/=2;
    ress+=press;
    //cout<<press<<endl;
    cout<<ress;
}
/*
8 7 5
1 2 3 1 4 5 5 4
1 2
2 3
3 4
2 5
5 6
2 7
7 8
 */

Compilation message

paths.cpp: In function 'int main()':
paths.cpp:67:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |         for (int i=0; i<boje.size(); i++)
      |                       ~^~~~~~~~~~~~
paths.cpp:69:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |             for (int j=0; j<boje.size(); j++)
      |                           ~^~~~~~~~~~~~
paths.cpp:73:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |                 for (int k=0; k<boje.size(); k++) { if (k!=i && k!=j) { if (c3==-1) c3=boje[k]; else c4=boje[k]; } }
      |                               ~^~~~~~~~~~~~

Subtask #1
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 10840 KB Output is correct
2 Correct 2 ms 10844 KB Output is correct
3 Correct 2 ms 10844 KB Output is correct
4 Correct 2 ms 10844 KB Output is correct
5 Correct 3 ms 10840 KB Output is correct
6 Correct 2 ms 10844 KB Output is correct
7 Correct 2 ms 10844 KB Output is correct
8 Correct 2 ms 10844 KB Output is correct
9 Correct 2 ms 10840 KB Output is correct
10 Correct 3 ms 10844 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 167 ms 20528 KB Output is correct
2 Correct 146 ms 19924 KB Output is correct
3 Correct 489 ms 121204 KB Output is correct
4 Correct 200 ms 31924 KB Output is correct
5 Correct 148 ms 24512 KB Output is correct
6 Correct 359 ms 89012 KB Output is correct
7 Correct 491 ms 121264 KB Output is correct
8 Correct 498 ms 121724 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 10840 KB Output is correct
2 Correct 2 ms 10844 KB Output is correct
3 Correct 2 ms 10844 KB Output is correct
4 Correct 2 ms 10844 KB Output is correct
5 Correct 3 ms 10840 KB Output is correct
6 Correct 2 ms 10844 KB Output is correct
7 Correct 2 ms 10844 KB Output is correct
8 Correct 2 ms 10844 KB Output is correct
9 Correct 2 ms 10840 KB Output is correct
10 Correct 3 ms 10844 KB Output is correct
11 Correct 167 ms 20528 KB Output is correct
12 Correct 146 ms 19924 KB Output is correct
13 Correct 489 ms 121204 KB Output is correct
14 Correct 200 ms 31924 KB Output is correct
15 Correct 148 ms 24512 KB Output is correct
16 Correct 359 ms 89012 KB Output is correct
17 Correct 491 ms 121264 KB Output is correct
18 Correct 498 ms 121724 KB Output is correct
19 Correct 164 ms 21396 KB Output is correct
20 Correct 153 ms 20904 KB Output is correct
21 Correct 479 ms 121480 KB Output is correct
22 Correct 189 ms 30392 KB Output is correct
23 Correct 187 ms 25172 KB Output is correct
24 Correct 362 ms 90064 KB Output is correct
25 Correct 493 ms 119456 KB Output is correct
26 Correct 473 ms 119796 KB Output is correct
27 Correct 150 ms 18512 KB Output is correct
28 Correct 191 ms 20560 KB Output is correct
29 Correct 498 ms 118572 KB Output is correct
30 Correct 324 ms 68412 KB Output is correct
31 Correct 347 ms 66996 KB Output is correct
32 Correct 506 ms 118976 KB Output is correct
33 Correct 2 ms 10840 KB Output is correct
34 Correct 2 ms 10840 KB Output is correct
35 Correct 2 ms 10844 KB Output is correct
36 Correct 2 ms 10844 KB Output is correct
37 Correct 3 ms 10844 KB Output is correct
38 Correct 2 ms 10844 KB Output is correct
39 Correct 2 ms 10852 KB Output is correct
40 Correct 2 ms 10840 KB Output is correct
41 Correct 2 ms 10840 KB Output is correct
42 Correct 2 ms 10856 KB Output is correct

Subtask #4
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 10844 KB Output is correct
2 Incorrect 69 ms 12832 KB Output isn't correct
3 Halted 0 ms 0 KB -