Submission #582994

#	Time	Username	Problem	Language	Result	Execution time	Memory
582994		NintsiChkhaidze	Sirni (COCI17_sirni)	C++14	Compilation error	0 ms	0 KiB

sirni

//#include <bits/stdc++.h>
#include <iostream>
#include <vector>
#define s second
#define pb push_back
#define f first
using namespace std;

const int N = 100005,M = 10000005;
int p[N],ans,sz[N];
int m[M];

vector <pair<int,pair<int,int> > >  edges;
vector <pair<int,int> > d;

int P(int x){
    if (x == p[x]) return x;
    return p[x] = P(p[x]);
}

void dsu(int a,int b,int c){
    int pa = P(a),pb = P(b);
    if (pa == pb) return;
    ans += c;
    if (sz[pa] < sz[pb]) swap(pa,pb);
    sz[pa]+=sz[pb];
    sz[pb]=0;
    p[pb] = pa;
}

int main() {
    ios_base::sync_with_stdio(0),cin.tie(NULL),cout.tie(NULL);
    int n;
    cin>>n;
    for (int i = 1; i <= n; i++){
        int a;
        cin>>a;
        p[i] = i,sz[i] = 1;
        d.pb({a,i});
    }


    sort(d.begin(),d.end());
    int r = d.size() - 1;
    m[10000001] = -1;
    for (int i = 1e7; i >= 1; i--){
        m[i] = m[i + 1];
        while (r >= 0 && i <= d[r].f)
            m[i] = r,r--;
    }

    for (int y = 0; y < n; y++){
        if (y > 0 && d[y].f == d[y - 1].f)
            edges.pb({0,{y,y - 1}});

        if (y + 1 < n && d[y+1].f - d[y].f < d[y].f) edges.pb({d[y+1].f - d[y].f,{y,y + 1}});

        if (y > 0 && d[y].f == d[y - 1].f) continue;
        for (int j = d[y].f; j <= 1e7; j += d[y].f){
            if (m[j] < 0) continue;
            if (d[m[j]].f - j < d[y].f)
                edges.pb({d[m[j]].f - j,{y,m[j]}});
        }
    }

    sort(edges.begin(),edges.end());
    for (int i=0;i<edges.size();i++){
        int x = edges[i].s.f,y = edges[i].s.s,c = edges[i].f;
        dsu(x,y,c);
    }
    cout<<ans;
}

Compilation message (stderr)

sirni.cpp: In function 'int main()':
sirni.cpp:43:5: error: 'sort' was not declared in this scope; did you mean 'qsort'?
   43 |     sort(d.begin(),d.end());
      |     ^~~~
      |     qsort
sirni.cpp:67:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |     for (int i=0;i<edges.size();i++){
      |                  ~^~~~~~~~~~~~~