Submission #528623

#	Time	Username	Problem	Language	Result	Execution time	Memory
528623		DanerZein	Road Closures (APIO21_roads)	C++14	0 / 100	41 ms	5560 KiB

roads

#include "roads.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
struct dato{
  int u,v,w;
  dato(int uu,int vv,int ww){
    u=uu; v=vv;
    w=ww;
  }
};
const int MAX_N=1e5+10;
bool orden(dato a,dato b){
  return a.w>b.w;
}
bool vis[MAX_N];
std::vector<long long> minimum_closure_costs(int N, std::vector<int> U,
                                             std::vector<int> V,
                                             std::vector<int> W) {
  vector<ll> res;
  vector<dato> ed;
  ll s=0;
  for(int i=0;i<U.size();i++){
    ed.push_back(dato{U[i],V[i],W[i]});
    s+=W[i];
  }
  sort(ed.begin(),ed.end(),orden);
  memset(vis,0,sizeof vis);
  res.push_back(s);
  for(int i=0;i<N-1;i++){
    if(!vis[ed[i].u] && !vis[ed[i].v]){
      s-=ed[i].w;
      vis[ed[i].u]=1;
      vis[ed[i].v]=1;
    }
  }
  res.push_back(s);
  while(res.size()!=N) res.push_back(0);
  return res;
}

Compilation message (stderr)

roads.cpp: In function 'std::vector<long long int> minimum_closure_costs(int, std::vector<int>, std::vector<int>, std::vector<int>)':
roads.cpp:23:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |   for(int i=0;i<U.size();i++){
      |               ~^~~~~~~~~
roads.cpp:38:19: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   38 |   while(res.size()!=N) res.push_back(0);
      |         ~~~~~~~~~~^~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 7
• Subtask 3: 0 / 14
• Subtask 4: 0 / 10
• Subtask 5: 0 / 17
• Subtask 6: 0 / 25
• Subtask 7: 0 / 22