Submission #386784

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
386784	2021-04-07 09:54:24	clifter	Street Lamps (APIO19_street_lamps)	C++14	100 / 100	1555 ms	56368 KiB

street_lamps

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#include <bits/stdc++.h>
using namespace std;
const int MAXN = 300005;
using lint = long long;
using pi = pair<int, int>;
struct bit{
  int tree[MAXN];
  void add(int x, int v){
    while(x < MAXN){
      tree[x] += v;
      x += x & -x;
    }
  }
  int query(int x){
    int ret = 0;
    while(x){
      ret += tree[x];
      x -= x & -x;
    }
    return ret;
  }
}bit;
struct intv{
  int s, e, x;
  bool operator<(const intv &i)const{
    return s < i.s;
  }
};
 
 
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Compilation message (stderr)

street_lamps.cpp: In function 'void solve(int, int)':
street_lamps.cpp:70:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<event>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |   while(ptr < pupd.size() && pupd[ptr].x <= i.x){
      |         ~~~~^~~~~~~~~~~~~
street_lamps.cpp: In function 'int main()':
street_lamps.cpp:85:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   85 |  scanf("%d %d",&n,&q);
      |  ~~~~~^~~~~~~~~~~~~~~
street_lamps.cpp:86:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   86 |  scanf("%s", str + 1);
      |  ~~~~~^~~~~~~~~~~~~~~
street_lamps.cpp:99:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   99 |   scanf("%s", buf);
      |   ~~~~~^~~~~~~~~~~
street_lamps.cpp:101:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  101 |    int t; scanf("%d",&t);
      |           ~~~~~^~~~~~~~~
street_lamps.cpp:135:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  135 |    int a, b; scanf("%d %d",&a,&b);
      |              ~~~~~^~~~~~~~~~~~~~~

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