oj.uz

Submission #888336

# Submission time Handle Problem Language Result Execution time Memory
888336 2023-12-17T01:50:05 Z 1075508020060209tc Paths (BOI18_paths) C++14
70 / 100
 364 ms 64184 KB 
#pragma GCC optimize("O3")
#include<bits/stdc++.h>
using namespace std;
#define int long long
//const int mod=998244353;
int n;int m;int K;
int cr[500005];
int ar[500005];
int br[500005];
vector<int>e[500005];
int ans;

void solve2(){
for(int i=1;i<=m;i++){
    if(cr[ar[i]]!=cr[br[i]]){ans+=2;}
}
}

void solve3(){
int ret=0;
for(int nw=1;nw<=n;nw++){
    vector<int>tbl(10,0);
    for(int i=0;i<e[nw].size();i++){
        int v=e[nw][i];
        for(int j=1;j<=5;j++){
            if(j==cr[v]){continue;}
            if(j==cr[nw]){continue;}
            if(cr[v]==cr[nw]){continue;}
            ret+=tbl[j];
        }
        tbl[cr[v]]++;
    }
}
ret*=2;
ans+=ret;
}

void solve4(){
vector<vector<int>>tbl(n+10,vector<int>(6,0));
for(int nw=1;nw<=n;nw++){
    for(int i=0;i<e[nw].size();i++){
        int v=e[nw][i];
        if(cr[v]!=cr[nw]){
            tbl[nw][cr[v]]++;
        }
    }
}
for(int i=1;i<=m;i++){
    int a=ar[i];int b=br[i];
    for(int x=1;x<=5;x++){
        for(int y=1;y<=5;y++){
            if(x==cr[a]||y==cr[a]||x==cr[b]||y==cr[b]||x==y||cr[a]==cr[b]){continue;}
            ans+=tbl[a][x]*tbl[b][y]*2;
        }
    }

}


}

signed main(){
cin>>n>>m>>K;
for(int i=1;i<=n;i++){
    cin>>cr[i];
}
for(int i=1;i<=m;i++){
    cin>>ar[i]>>br[i];
    e[ar[i]].push_back(br[i]);
    e[br[i]].push_back(ar[i]);
}
ans=0;
solve2();
solve3();
//cout<<ans<<" ";
if(K>=4){solve4();}

cout<<ans<<"\n";


}

Compilation message

paths.cpp: In function 'void solve3()':
paths.cpp:23:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     for(int i=0;i<e[nw].size();i++){
      |                 ~^~~~~~~~~~~~~
paths.cpp: In function 'void solve4()':
paths.cpp:41:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |     for(int i=0;i<e[nw].size();i++){
      |                 ~^~~~~~~~~~~~~

Subtask #1
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 16988 KB Output is correct
2 Correct 4 ms 16984 KB Output is correct
3 Correct 4 ms 16988 KB Output is correct
4 Correct 4 ms 16988 KB Output is correct
5 Correct 4 ms 16984 KB Output is correct
6 Correct 4 ms 16988 KB Output is correct
7 Correct 4 ms 16988 KB Output is correct
8 Correct 5 ms 16988 KB Output is correct
9 Correct 4 ms 17012 KB Output is correct
10 Correct 4 ms 16988 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 122 ms 28244 KB Output is correct
2 Correct 111 ms 28304 KB Output is correct
3 Correct 265 ms 33616 KB Output is correct
4 Correct 153 ms 29268 KB Output is correct
5 Correct 150 ms 29236 KB Output is correct
6 Correct 234 ms 31936 KB Output is correct
7 Correct 259 ms 33696 KB Output is correct
8 Correct 267 ms 34428 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 16988 KB Output is correct
2 Correct 4 ms 16984 KB Output is correct
3 Correct 4 ms 16988 KB Output is correct
4 Correct 4 ms 16988 KB Output is correct
5 Correct 4 ms 16984 KB Output is correct
6 Correct 4 ms 16988 KB Output is correct
7 Correct 4 ms 16988 KB Output is correct
8 Correct 5 ms 16988 KB Output is correct
9 Correct 4 ms 17012 KB Output is correct
10 Correct 4 ms 16988 KB Output is correct
11 Correct 122 ms 28244 KB Output is correct
12 Correct 111 ms 28304 KB Output is correct
13 Correct 265 ms 33616 KB Output is correct
14 Correct 153 ms 29268 KB Output is correct
15 Correct 150 ms 29236 KB Output is correct
16 Correct 234 ms 31936 KB Output is correct
17 Correct 259 ms 33696 KB Output is correct
18 Correct 267 ms 34428 KB Output is correct
19 Correct 147 ms 31136 KB Output is correct
20 Correct 108 ms 30332 KB Output is correct
21 Correct 267 ms 38212 KB Output is correct
22 Correct 159 ms 32524 KB Output is correct
23 Correct 143 ms 32532 KB Output is correct
24 Correct 208 ms 36052 KB Output is correct
25 Correct 261 ms 37968 KB Output is correct
26 Correct 258 ms 38656 KB Output is correct
27 Correct 128 ms 30288 KB Output is correct
28 Correct 148 ms 32596 KB Output is correct
29 Correct 356 ms 63924 KB Output is correct
30 Correct 299 ms 48800 KB Output is correct
31 Correct 243 ms 48804 KB Output is correct
32 Correct 364 ms 64184 KB Output is correct
33 Correct 4 ms 16988 KB Output is correct
34 Correct 4 ms 16984 KB Output is correct
35 Correct 4 ms 16988 KB Output is correct
36 Correct 4 ms 17048 KB Output is correct
37 Correct 4 ms 16984 KB Output is correct
38 Correct 4 ms 16988 KB Output is correct
39 Correct 4 ms 17028 KB Output is correct
40 Correct 4 ms 16988 KB Output is correct
41 Correct 5 ms 16988 KB Output is correct
42 Correct 4 ms 16984 KB Output is correct

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 16988 KB Output is correct
2 Incorrect 45 ms 21200 KB Output isn't correct
3 Halted 0 ms 0 KB -