oj.uz

Submission #106374

# Submission time Handle Problem Language Result Execution time Memory
106374 2019-04-18T04:20:19 Z Hideo Duathlon (APIO18_duathlon) C++14
23 / 100
 205 ms 15480 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define mk make_pair
#define pb push_back
#define fr first
#define sc second
#define vi vector < int >
#define pii pair < int, int >

const int N = 2e5 + 7;
const int INF = 1e9 + 7;

int sz[N];
int n, m;
int ans;

vi g[N];
int asd;
int as[N];

void dfs (int v = 1, int p = 0){
    sz[v] = 1;
    as[v] = asd;
    for (int to : g[v]){
        if (!sz[to]){
            dfs(to, v);
            sz[v] += sz[to];
        }
    }
}

main(){
    cin >> n >> m;
    for (int i = 1; i <= m; i++){
        int a, b;
        scanf("%lld%lld", &a, &b);
        g[a].pb(b);
        g[b].pb(a);
    }
    for (int i = 1; i <= n; i++) {
			if (!sz[i]) {
				asd = i;
				dfs(i);
				ans -= sz[i] * (sz[i] - 1) / 2;
			}
    }
    for (int i = 1; i <= n; i++) {
			ans += (sz[i] * (sz[as[i]] - sz[i]));
    }
    cout << ans * 2;
}

Compilation message

count_triplets.cpp:34:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^
count_triplets.cpp: In function 'int main()':
count_triplets.cpp:38:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld%lld", &a, &b);
         ~~~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 4992 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 4992 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 121 ms 15480 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 5120 KB Output is correct
2 Correct 8 ms 5120 KB Output is correct
3 Correct 7 ms 5120 KB Output is correct
4 Correct 7 ms 5120 KB Output is correct
5 Correct 7 ms 5120 KB Output is correct
6 Correct 7 ms 5120 KB Output is correct
7 Correct 9 ms 5120 KB Output is correct
8 Correct 7 ms 5120 KB Output is correct
9 Correct 7 ms 5120 KB Output is correct
10 Correct 7 ms 5120 KB Output is correct
11 Correct 7 ms 5120 KB Output is correct
12 Correct 7 ms 5120 KB Output is correct
13 Correct 8 ms 4992 KB Output is correct
14 Correct 6 ms 5120 KB Output is correct
15 Correct 7 ms 5120 KB Output is correct
16 Correct 6 ms 5120 KB Output is correct
17 Correct 8 ms 5120 KB Output is correct
18 Correct 7 ms 5120 KB Output is correct
19 Correct 8 ms 5120 KB Output is correct
20 Correct 7 ms 5120 KB Output is correct

Subtask #5
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 96 ms 11508 KB Output is correct
2 Correct 90 ms 11464 KB Output is correct
3 Correct 90 ms 11512 KB Output is correct
4 Correct 90 ms 11568 KB Output is correct
5 Correct 89 ms 11528 KB Output is correct
6 Correct 109 ms 13432 KB Output is correct
7 Correct 122 ms 13132 KB Output is correct
8 Correct 114 ms 12676 KB Output is correct
9 Correct 94 ms 12280 KB Output is correct
10 Correct 96 ms 11524 KB Output is correct
11 Correct 98 ms 11640 KB Output is correct
12 Correct 205 ms 11640 KB Output is correct
13 Correct 89 ms 11640 KB Output is correct
14 Correct 87 ms 11256 KB Output is correct
15 Correct 67 ms 11000 KB Output is correct
16 Correct 50 ms 9592 KB Output is correct
17 Correct 77 ms 11752 KB Output is correct
18 Correct 72 ms 11752 KB Output is correct
19 Correct 61 ms 11744 KB Output is correct
20 Correct 61 ms 11716 KB Output is correct

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5120 KB Output is correct
2 Correct 6 ms 5120 KB Output is correct
3 Incorrect 7 ms 5120 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 91 ms 11716 KB Output is correct
2 Correct 83 ms 11508 KB Output is correct
3 Incorrect 141 ms 12152 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 4992 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 4992 KB Output isn't correct
2 Halted 0 ms 0 KB -