Submission #163564

#	Time	Username	Problem	Language	Result	Execution time	Memory
163564		TadijaSebez	Two Dishes (JOI19_dishes)	C++14	0 / 100	685 ms	55352 KiB

dishes

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
const int N=1000050;
const int M=2*N;
const ll inf=9e18;
ll ckmx(ll &a, ll b){ return a=max(a,b);}
int ls[M],rs[M],tsz,root;
ll lzy[M][2],mx[M];
void Upd(int c, ll x, int t){ t==0?mx[c]+=x,lzy[c][0]+=x,lzy[c][1]+=x:ckmx(mx[c],x),ckmx(lzy[c][1],x);}
void Push(int c){ Upd(ls[c],lzy[c][0],0);Upd(ls[c],lzy[c][1],1);Upd(rs[c],lzy[c][0],0);Upd(rs[c],lzy[c][1],1);lzy[c][0]=0;lzy[c][1]=-inf;}
void Set(int c, int ss, int se, int qs, int qe, ll x, int t)
{
	if(qs>qe || qs>se || ss>qe) return;
	if(qs<=ss && qe>=se) return Upd(c,x,t);
	int mid=ss+se>>1;
	Push(c);
	Set(ls[c],ss,mid,qs,qe,x,t);
	Set(rs[c],mid+1,se,qs,qe,x,t);
	mx[c]=max(mx[ls[c]],mx[rs[c]]);
}
ll Get(int c, int ss, int se, int qi)
{
	if(ss==se) return mx[c];
	int mid=ss+se>>1;Push(c);
	return qi<=mid?Get(ls[c],ss,mid,qi):Get(rs[c],mid+1,se,qi);
}
void Build(int &c, int ss, int se)
{
	c=++tsz;lzy[c][1]=-inf;
	if(ss==se) return;
	int mid=ss+se>>1;
	Build(ls[c],ss,mid);
	Build(rs[c],mid+1,se);
}
ll a[N],s[N],p[N],b[N],t[N],q[N];
vector<pair<int,ll>> Us[N];
int main()
{
	int n,m;
	scanf("%i %i",&n,&m);
	for(int i=1;i<=n;i++) scanf("%lld %lld %lld",&a[i],&s[i],&p[i]),a[i]+=a[i-1];
	for(int i=1;i<=m;i++) scanf("%lld %lld %lld",&b[i],&t[i],&q[i]),b[i]+=b[i-1];
	for(int i=1;i<=n;i++)
	{
		int j=upper_bound(b,b+m+1,s[i]-a[i])-b-1;
		if(j>=0) Us[j].pb({i,p[i]});
	}
	ll sum=0;
	for(int i=1;i<=m;i++)
	{
		sum+=q[i];
		int j=upper_bound(a,a+n+1,t[i]-b[i])-a;
		if(j<=n) Us[i-1].pb({j,-q[i]});
	}
	Build(root,0,n);
	for(int i=0;i<=m;i++)
	{
		sort(Us[i].begin(),Us[i].end());
		for(auto u:Us[i]) Set(root,0,n,u.first,n,u.second,0);
		if(i==m) break;
		for(auto u:Us[i]) if(u.first) Set(root,0,n,u.first,n,Get(root,0,n,u.first-1),1);
	}
	printf("%lld\n",sum+Get(root,0,n,n));
	return 0;
}

Compilation message (stderr)

dishes.cpp: In function 'void Set(int, int, int, int, int, long long int, int)':
dishes.cpp:17:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid=ss+se>>1;
          ~~^~~
dishes.cpp: In function 'long long int Get(int, int, int, int)':
dishes.cpp:26:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid=ss+se>>1;Push(c);
          ~~^~~
dishes.cpp: In function 'void Build(int&, int, int)':
dishes.cpp:33:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid=ss+se>>1;
          ~~^~~
dishes.cpp: In function 'int main()':
dishes.cpp:42:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%i %i",&n,&m);
  ~~~~~^~~~~~~~~~~~~~~
dishes.cpp:43:65: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1;i<=n;i++) scanf("%lld %lld %lld",&a[i],&s[i],&p[i]),a[i]+=a[i-1];
                        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
dishes.cpp:44:65: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1;i<=m;i++) scanf("%lld %lld %lld",&b[i],&t[i],&q[i]),b[i]+=b[i-1];
                        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 3
• Subtask 3: 0 / 7
• Subtask 4: 0 / 39
• Subtask 5: 0 / 11
• Subtask 6: 0 / 9
• Subtask 7: 0 / 17
• Subtask 8: 0 / 9