Submission #782828

#	Time	Username	Problem	Language	Result	Execution time	Memory
782828		Lyrically	Teams (IOI15_teams)	C++17	0 / 100	4078 ms	11476 KiB

teams

#include<bits/stdc++.h>
using namespace std;
#define pii pair<int,int>
#define pb push_back
#define rep(i,n) for(int i=0;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
int read(){int x;scanf("%d",&x);return x;}
void print(int x){printf("%d\n",x);}
void file(string s)
{
	freopen((s+".in").c_str(),"r",stdin);
	freopen((s+".out").c_str(),"w",stdout);
}
const int mod=998244353;
int n;
struct Item
{
	int a,b;
	bool operator < (Item c) const
	{
		return a==c.a?b<c.b:a<c.a;
	}
}p[200005];
void init(int N,int A[],int B[])
{
	n=N;
	rep(i,n){p[i+1].a=A[i];}
	rep(i,n){p[i+1].b=B[i];}
	sort(p+1,p+n+1);
}
bool can(int m,int t[])
{
	sort(t,t+m);
	multiset<pii> st;
	rep1(i,n)
	{
		st.insert({p[i].a,p[i].b});
	}
	vector<pii> v;
	rep1(i,n)
	{
		v.pb({p[i].b,p[i].a});
	}
	sort(v.begin(),v.end());
	rep(i,n){swap(v[i].first,v[i].second);}
	int l=0;
	//p[i].a<=t[i]<=p[i].b
	rep(i,m)
	{
		if(st.empty()){return 0;}
		while(l<n&&v[l].second<t[i])
		{
			if(st.find(v[l])!=st.end()){st.erase(st.find(v[l]));}
			l++;
		}
		if(!st.empty()&&(*st.begin()).first>t[i]){return 0;}
		rep(j,t[i])
		{
			if(st.empty()){return 0;}
			pii x=*st.begin();
			st.erase(st.begin());
		}
	}
	return 1;
}

Compilation message (stderr)

teams.cpp: In function 'bool can(int, int*)':
teams.cpp:60:8: warning: variable 'x' set but not used [-Wunused-but-set-variable]
   60 |    pii x=*st.begin();
      |        ^
teams.cpp: In function 'int read()':
teams.cpp:7:23: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 | int read(){int x;scanf("%d",&x);return x;}
      |                  ~~~~~^~~~~~~~~
teams.cpp: In function 'void file(std::string)':
teams.cpp:11:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |  freopen((s+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
teams.cpp:12:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |  freopen((s+".out").c_str(),"w",stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 21
• Subtask 2: 0 / 13
• Subtask 3: 0 / 43
• Subtask 4: 0 / 23