Submission #755670

#	Time	Username	Problem	Language	Result	Execution time	Memory
755670		VadimK	Stranded Far From Home (BOI22_island)	C++17	0 / 100	1085 ms	14608 KiB

island

#include <bits/stdc++.h>
#define ll long long

using namespace std;

int main()
{
    int n,m;
    cin>>n>>m;
    string ans="";
    ll s[n+1];
    vector <ll> g[n+1];
    for (int i=1; i<=n; i++)
        cin>>s[i];
      for (int i=1; i<=m; i++)
      {
          int a,b;
          cin>>a>>b;
          g[a].push_back(b);
          g[b].push_back(a);
      }
      priority_queue <pair<ll,ll> > q;
        for (int i=1; i<=n; i++)
        {
            ll total=s[i];
            ll v,num;
            bool vis[n+1]={0},can=1;
            q.push(make_pair(0,i));
           while (!q.empty())
           {
                tie (num,v)=q.top(); q.pop();
               num*=-1;
               if (total<num) break;
               vis[v]=1;
               total+=num;
              for (int j=0; j<g[v].size(); j++)
               if (!vis[g[v][j]]) q.push(make_pair(-1*s[g[v][j]],g[v][j]));
           }
           for (int x=1; x<=n; x++)
            if (!vis[x]) {ans+='0'; can=0; break;}
            if (can==1) ans+='1';
        }
        cout<<ans;
}

Compilation message (stderr)

island.cpp: In function 'int main()':
island.cpp:36:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |               for (int j=0; j<g[v].size(); j++)
      |                             ~^~~~~~~~~~~~
island.cpp:39:12: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   39 |            for (int x=1; x<=n; x++)
      |            ^~~
island.cpp:41:13: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   41 |             if (can==1) ans+='1';
      |             ^~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 15
• Subtask 4: 0 / 30
• Subtask 5: 0 / 35