Submission #862656

#	Time	Username	Problem	Language	Result	Execution time	Memory
862656		Irate	Sirni (COCI17_sirni)	C++14	42 / 140	45 ms	8652 KiB

sirni

#include<bits/stdc++.h>
using namespace std;
const int mxN = 1e3 + 3;
int a[mxN];
struct Edge{
    int u, v, w;
    bool operator<(Edge &other){
        return w < other.w;
    }
};
struct DSU{
    vector<int>par;
    DSU(int n){
        par.assign(n + 1, -1);
    }
    int FindRep(int u){
        if(par[u] < 0)return u;
        return par[u] = FindRep(par[u]);
    }
    bool Union(int u, int v){
        u = FindRep(u);
        v = FindRep(v);
        if(u == v)return false;
        if(par[u] > par[v])swap(u, v);
        par[u] += par[v];
        par[v] = u;
        return true;
    }
};
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin >> n;
    for(int i = 1;i <= n;++i){
        cin >> a[i];
    }
    vector<Edge>edge_list;
    for(int i = 1;i <= n;++i){
        for(int j = i + 1;j <= n;++j){
            Edge temp;
            temp.u = i;
            temp.v = j;
            temp.w = min(a[i] % a[j], a[j] % a[i]);
            edge_list.push_back(temp);
        }
    }
    sort(edge_list.begin(), edge_list.end());
    DSU dsu(n);
    long long res = 0;
    for(int i = 0;i < edge_list.size();++i){
        if(dsu.Union(edge_list[i].u, edge_list[i].v))res += edge_list[i].w;
    }
    cout << res;
}

Compilation message (stderr)

sirni.cpp: In function 'int main()':
sirni.cpp:52:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |     for(int i = 0;i < edge_list.size();++i){
      |                   ~~^~~~~~~~~~~~~~~~~~

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 14 / 14
• Subtask 4: 0 / 14
• Subtask 5: 0 / 14
• Subtask 6: 0 / 14
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• Subtask 10: 0 / 14