Monday, September 16, 2024

# Codeforces Round #385 (Div. 2), problem: (C) Hongcow Builds A Nation Solution in C/C++

```#include <stdio.h>
#include <string.h>

int c[1005], p[1005], sz[1005], gov[1005];

int find_parent(int n) {
if (p[n] == n)
return n;
return p[n] = find_parent(p[n]);
}

int get_full_size(int n) {
return n * (n-1) / 2;
}

int main(int argc, char** argv) {
int i, n, m, k, u, v, max_size, total_free, used, total_edge;

scanf("%d%d%d", &n, &m, &k);
for (i = 0; i < k; i++)
scanf("%d", &c[i]);

for (i = 1; i <= n; i++) {
p[i] = i;
sz[i] = 1;
}

for (i = 0; i < m; i++) {
scanf("%d%d", &u, &v);
if (find_parent(u) != find_parent(v)) {
sz[p[v]] += sz[p[u]];
sz[p[u]] = 0;
p[p[u]] = p[v];
}
}

memset(gov, 0, sizeof gov);
max_size = 0;
for (i = 0; i < k; i++) {
c[i] = find_parent(c[i]);
gov[c[i]] = 1;
if (sz[c[i]] > max_size)
max_size = sz[c[i]];
}

total_free = 0;
for (i = 1; i <= n; i++)
if (!gov[i])
total_free += sz[i];

used = 0;
total_edge = 0;
for (i = 0; i < k; i++) {
if (sz[c[i]] == max_size && !used) {
total_edge += get_full_size(max_size+total_free);
used = 1;
}
else
total_edge += get_full_size(sz[c[i]]);
}

printf("%d\n", total_edge - m);

return 0;
}```

## Celebrating Black History Month:...

As February unfolds, so does the annual celebration of...

## The Path to Self-Mastery:...

Embarking on a journey of self-mastery and breaking free...

## Wizards of Waverly Place...

In a spellbinding announcement, Disney has officially revealed that...

## Jim Irsay’s Reported ‘Suspected...

In a shocking turn of events last month, Jim...

Coachella Valley Music and Arts Festival, one of the...

## 2024 Taiwan Election: Pivotal...

As Taiwan gears up for its 2024 presidential election,...

### Celebrating Black History Month: Past, Future

As February unfolds, so does the annual celebration of Black History Month, a time to reflect on the profound contributions, resilience, and rich cultural...

### The Path to Self-Mastery: Lessons from Book ‘The Mountain Is You’

Embarking on a journey of self-mastery and breaking free from self-sabotage is a transformative process that requires dedication and conscious effort. Brianna Wiest's insightful...

### Wizards of Waverly Place Cast Reunites for Enchanting Revival

In a spellbinding announcement, Disney has officially revealed that the beloved fantasy series "Wizards of Waverly Place" is set for a magical comeback, featuring...

### Jim Irsay’s Reported ‘Suspected Overdose’: A Closer Look

In a shocking turn of events last month, Jim Irsay, the owner of the Indianapolis Colts, was reportedly found unresponsive at his home in...

### Coachella 2024: Iconic headliners, unforgettable musical experience!

Coachella Valley Music and Arts Festival, one of the most iconic and eagerly anticipated music festivals globally, has just dropped its highly anticipated lineup...

### 2024 Taiwan Election: Pivotal Moment in Political Landscape

As Taiwan gears up for its 2024 presidential election, the political landscape is buzzing with anticipation and fervor. With the island nation situated at...

### Michael Strahan’s Daughter’s Medulloblastoma Diagnosis

In a recent and heartbreaking revelation, Michael Strahan, former NFL star and television personality, shared the devastating news of his daughter Isabella's diagnosis with...

### Michigan vs. Washington: The 2024 National Championship Clash

In a highly anticipated matchup, the 2024 National Championship will witness a clash of football titans as the Michigan Wolverines square off against the...

### Jason Kelce: Unmasking the Unconventional NFL Icon

In the world of professional football, where conformity often takes center stage, one player stands out as a beacon of individuality, both on and...