Submission #294702

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
294702	2020-09-09 08:38:44	Plurm	Strange Device (APIO19_strange_device)	C++11	100 / 100	4757 ms	376928 KiB

strange_device

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#include <bits/stdc++.h>
#define long long long
using namespace std;
long a, b;
set<pair<long,long> > blockmp;
map<long, set<pair<long,long> > > segmp;
long ans;
void addSegment(long bckt, long l, long r){
  auto bit = blockmp.lower_bound({bckt+1,0});
  if(bit != blockmp.begin()){
    bit--;
    if(bit->second >= bckt) return;
  }
  auto cit = segmp[bckt].lower_bound({l+1, 0});
  if(cit != segmp[bckt].begin()){
    cit--;
    if(cit->second >= r) return;
  }
  auto it = segmp[bckt].lower_bound({l, 0});
  while(it != segmp[bckt].end() && it->first <= r){
    if(it->second <= r){
      ans -= it->second - it->first + 1;
      it = segmp[bckt].erase(it);
    }else{
      ans -= it->second - it->first + 1;
      long tmpr = it->second;
      segmp[bckt].erase(it);
      segmp[bckt].insert({r+1, tmpr}).first;
      ans += tmpr - r;
      break;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

strange_device.cpp: In function 'int main()':
strange_device.cpp:102:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  102 |  scanf("%d%lld%lld",&n,&a,&b);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~
strange_device.cpp:107:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  107 |   scanf("%lld%lld",&l,&r);
      |   ~~~~~^~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
• Subtask 4: 5 / 5
• Subtask 5: 5 / 5
• Subtask 6: 20 / 20
• Subtask 7: 20 / 20
• Subtask 8: 30 / 30