Submission #897593

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
897593	2024-01-03 13:13:55	penguin133	Cake 3 (JOI19_cake3)	C++17	100 / 100	2770 ms	14516 KiB

cake3

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#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pi pair<int, int>
#define pii pair<int, pi>
#define fi first
#define se second
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
int n, m;
pi A[200005];
int dp[200005];
multiset <int> ms, buf;
int L = 1, R = 0, cur = 0, ans = -1e18;
void shift(int l, int r){
  while(L < l){
    if(buf.find(A[L].se) != buf.end())buf.erase(buf.find(A[L].se));
    else ms.erase(ms.find(A[L].se)), cur -= A[L].se;
    while(ms.size() < m && !buf.empty())ms.insert(*--buf.end()), cur += *--buf.end(), buf.erase(--buf.end());
    L++;
  }
  while(L > l){
    L--;
    buf.insert(A[L].se);
    while(ms.size() < m && !buf.empty())cur += *--buf.end(), ms.insert(*--buf.end()), buf.erase(--buf.end());
 
 
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Compilation message (stderr)

cake3.cpp: In function 'void shift(long long int, long long int)':
cake3.cpp:24:19: warning: comparison of integer expressions of different signedness: 'std::multiset<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   24 |   while(ms.size() < m && !buf.empty())ms.insert(*--buf.end()), cur += *--buf.end(), buf.erase(--buf.end());
      |         ~~~~~~~~~~^~~
cake3.cpp:30:19: warning: comparison of integer expressions of different signedness: 'std::multiset<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   30 |   while(ms.size() < m && !buf.empty())cur += *--buf.end(), ms.insert(*--buf.end()), buf.erase(--buf.end());
      |         ~~~~~~~~~~^~~
cake3.cpp:42:19: warning: comparison of integer expressions of different signedness: 'std::multiset<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   42 |   while(ms.size() < m && !buf.empty())cur += *--buf.end(), ms.insert(*--buf.end()), buf.erase(--buf.end());
      |         ~~~~~~~~~~^~~
cake3.cpp:54:19: warning: comparison of integer expressions of different signedness: 'std::multiset<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   54 |   while(ms.size() < m && !buf.empty())cur += *--buf.end(), ms.insert(*--buf.end()), buf.erase(--buf.end());
      |         ~~~~~~~~~~^~~
cake3.cpp: In function 'void dnc(long long int, long long int, long long int, long long int)':
cake3.cpp:65:16: warning: comparison of integer expressions of different signedness: 'std::multiset<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   65 |   if(ms.size() == m && mx < cur - 2 * (A[mid].fi - A[i].fi))mx = cur - 2 * (A[mid].fi - A[i].fi), pos = i;
      |      ~~~~~~~~~~^~~~
cake3.cpp: At global scope:
cake3.cpp:81:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   81 | main(){
      | ^~~~

• Subtask 1: 5 / 5
• Subtask 2: 19 / 19
• Subtask 3: 76 / 76