Submission #705582

#	Time	Username	Problem	Language	Result	Execution time	Memory
705582		bin9638	Teams (IOI15_teams)	C++17	Compilation error	0 ms	0 KiB

teams

#include <bits/stdc++.h>
 
using namespace std;
 
#define ll long long
#define fs first
#define sc second
#define N 500010
#define pb push_back
#define ii pair<int,int>
 
int n,cnt[N],l[N],r[N];
multiset<int>s;
vector<int>lis[N];
 
void init(int sl,int a[],int b[])
{
    n=sl;
    for(int i=1;i<=n;i++)
    {
        l[i]=a[i-1];
        r[i]=b[i-1];
    }
    for(int i=1;i<=n;i++)
    {
        lis[l[i]].pb(r[i]);
    }
}
 
int can(ll m,int sz[])
{
    memset(cnt,0,sizeof(cnt));
    for(int i=0;i<m;i++)
        cnt[sz[i]]++;
    s.clear();
    for(int i=1;i<=n;i++)
    {
        for(auto u:lis[i])
            s.insert(u);
        while(!s.empty()&&*s.begin()<i)
            s.erase(s.begin());
        if(1ll*cnt[i]*i>s.size())
            return 0;
        for(ll j=1ll*cnt[i]*i;j>=1;j--)
            s.erase(s.begin());
    }
    return 1;
}
 
#ifdef SKY
int main()
{
    freopen("A.inp","r",stdin);
    freopen("A.out","w",stdout);
  //  ios::sync_with_stdio(0);
   // cin.tie(NULL);
   // cout.tie(NULL);
    int n;
    cin>>n;
    int a[n],b[n];
    for(int i=0;i<n;i++)
        cin>>a[i]>>b[i];
    init(n,a,b);
    int q;
    cin>>q;
    while(q--)
    {
        int m;
        cin>>m;
        int k[m];
        for(int j=0;j<m;j++)
            cin>>k[j];
        cout<<can(m,k)<<endl;
    }
    return 0;
}
#endif // SKY
 

Compilation message (stderr)

teams.cpp: In function 'int can(long long int, int*)':
teams.cpp:42:24: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::multiset<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |         if(1ll*cnt[i]*i>s.size())
      |            ~~~~~~~~~~~~^~~~~~~~~
/usr/bin/ld: /tmp/cc7xxYTz.o: in function `main':
grader.c:(.text.startup+0x242): undefined reference to `can(int, int*)'
collect2: error: ld returned 1 exit status