Submission #1188786

#	Time	Username	Problem	Language	Result	Execution time	Memory
1188786		tamir1	Team Coding (EGOI24_teamcoding)	C++20	0 / 100	15 ms	8264 KiB

Main

#include <bits/stdc++.h>
using namespace std;

const int N = 1e5;
int n, k, a[N + 5], p[N + 5], cnt[2], c, depth[N + 5], clr[N + 5], dar, x[N + 5], y[N + 5], mx, moves, d;
vector<int> v[N + 5];

void bfs(int x) {
    queue<int> q;
    q.push(x);
    while(!q.empty()) {
    	int x = q.front();
    	q.pop();
    	for(int i : v[x]) {
    		depth[i] = depth[x] + 1;
    		q.push(i);
		}
	}
}

void bfs1(int z) {
	queue<int> q;
	q.push(z);
	while(!q.empty()) {
		int z = q.front();
		q.pop();
		int s = depth[z];
    	d = max(d, s);
    	x[s]++;
    	if(a[z] == c) y[s]++;
    	for(int i : v[z]) {
        	q.push(i);
    	}
	}
}

int main() {
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cin >> n >> k;
    for(int i = 0; i < n; i++) {
        cin >> a[i];
//		a[i] = 0;
        cnt[a[i]]++;
    }
    //N
    for(int i = 1; i < n; i++) {
        cin >> p[i];
//		p[i] = i - 1;
        v[p[i]].push_back(i);
    }
    //N
    //c = (cnt[0] < cnt[1] ? 1 : 0);
    bfs(0);
//    for(int i = 0; i < n; i++) {
//    	cout << depth[i] << " ";
//	}
    //N
    for(int i = 0; i < n; i++) {
        if(a[i] == c) {
            clr[depth[i]]++;
        }
    }
    //N
    for(int i = 0; i < n; i++) {
        if(clr[i]) {
            dar = i;
            break;
        }
    }
    for(int i = 0; i < n; i++) {
        //N
        if(depth[i] == dar) {
            d = n - 1;
            bfs1(i);
            int tmp1 = 0, tmp2 = 0;
            for(int j = 0; j <= d; j++) {
                if(clr[j] >= x[j]) {
                    tmp1 += x[j];
                    tmp2 += x[j] - y[j];
                }
                else {
                    tmp1 += clr[j];
                    tmp2 += max(0, clr[j] - y[j]);
                }
                x[j] = 0;
                y[j] = 0;
            }
            if(mx < tmp1) {
                mx = tmp1;
                moves = tmp2;
            }
            else if(mx == tmp1) {
                if(moves > tmp2) moves = tmp2;
            }
        }
    }
    if(mx <= cnt[a[0]]) {
        mx = cnt[a[0]];
        moves = 0;
    }
    cout << mx << " " << moves << "\n";
}

• Subtask 1: 0 / 12
• Subtask 2: 0 / 19
• Subtask 3: 0 / 27
• Subtask 4: 0 / 23
• Subtask 5: 0 / 19