Submission #124579

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
124579	2019-07-03 14:21:33	TadijaSebez	Street Lamps (APIO19_street_lamps)	C++11	100 / 100	4354 ms	199424 KiB

street_lamps

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#include <bits/stdc++.h>
using namespace std;
const int N=300050;
const int M=18*18*N;
int state[N];
struct Seg
{
  int l,r,tme;
  Seg(){}
  Seg(int a, int b, int c):l(a),r(b),tme(c){}
  bool operator < (Seg b) const { return l<b.l;}
};
set<Seg> all;
Seg Get(int x)
{
  auto it=all.lower_bound(Seg(x+1,0,0));
  it--;
  return *it;
}
int root[N],ls[M],rs[M],tsz,sum[M];
void Set(int &c, int ss, int se, int qs, int qe, int x)
{
  if(qs>qe || qs>se || ss>qe) return;
  if(!c) c=++tsz;
  if(qs<=ss && qe>=se){ sum[c]+=x;return;}
  int mid=ss+se>>1;
  Set(ls[c],ss,mid,qs,qe,x);
  Set(rs[c],mid+1,se,qs,qe,x);
}
int Get(int c, int ss, int se, int qi)
 
 
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Compilation message (stderr)

street_lamps.cpp: In function 'void Set(int&, int, int, int, int, int)':
street_lamps.cpp:26:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid=ss+se>>1;
          ~~^~~
street_lamps.cpp: In function 'int Get(int, int, int, int)':
street_lamps.cpp:33:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid=ss+se>>1;
          ~~^~~
street_lamps.cpp: In function 'int main()':
street_lamps.cpp:81:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%i %i",&n,&q);
  ~~~~~^~~~~~~~~~~~~~~
street_lamps.cpp:82:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s",s+1);
  ~~~~~^~~~~~~~~~
street_lamps.cpp:92:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s",t);
   ~~~~~^~~~~~~~
street_lamps.cpp:96:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%i",&x);
    ~~~~~^~~~~~~~~
street_lamps.cpp:102:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%i %i",&a,&b);
    ~~~~~^~~~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 20 / 20
• Subtask 5: 20 / 20