Submission #38727

#	Time	Username	Problem	Language	Result	Execution time	Memory
38727		Waschbar	Fireworks (APIO16_fireworks)	C++14	7 / 100	3 ms	13736 KiB

fireworks

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

const int MAXN = 300000;

long long N, n, m, ans;
long long dis[MAXN+1], pr[MAXN+1];
vector < vector < int > > g(MAXN+1);

int main() {

    cin >> n >> m;
    N = n+m;
    for(int i = 2; i <= N; i++) {
        cin >> pr[i] >> dis[i];
        g[pr[i]].push_back(i);
        g[i].push_back(pr[i]);
    }

    if(n == 1) {
        vector < long long > vv;
        for(int i = 2; i <= N; i++)
            vv.push_back(dis[i]);
        sort(vv.begin(),vv.end());
        long long xx = vv[vv.size()/2];
        for(int i = 0; i < vv.size(); i++)
            ans += abs(vv[i]-xx);
        cout << ans;
        return 0;
    }

    return 0;
}

Compilation message (stderr)

fireworks.cpp: In function 'int main()':
fireworks.cpp:26:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i = 0; i < vv.size(); i++)
                          ^

• Subtask 1: 7 / 7
• Subtask 2: 0 / 19
• Subtask 3: 0 / 29
• Subtask 4: 0 / 45