Submission #270332

#	Time	Username	Problem	Language	Result	Execution time	Memory
270332		anubhavdhar	Split the sequence (APIO14_sequence)	C++11	Compilation error	0 ms	0 KiB

This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.

sequence

#include<bits/stdc++.h>

#define ll long long
#define pb push_back
#define mp make_pair
#define pii pair<int, int>
#define pll pair<ll, ll>
#define ff first 
#define ss second
#define vi vector<int>
#define vl vector<ll>
#define vii vector<pii>
#define vll vector<pll>
#define FOR(i,N) for(i=0;i<(N);++i)
#define FORe(i,N) for(i=1;i<=(N);++i)
#define FORr(i,a,b) for(i=(a);i<(b);++i)
#define FORrev(i,N) for(i=(N);i>=0;--i)
#define F0R(i,N) for(int i=0;i<(N);++i)
#define F0Re(i,N) for(int i=1;i<=(N);++i)
#define F0Rr(i,a,b) for(ll i=(a);i<(b);++i)
#define F0Rrev(i,N) for(int i=(N);i>=0;--i)
#define all(v) (v).begin(),(v).end()
#define dbgLine cerr<<" LINE : "<<__LINE__<<"\n"
#define ldd long double

using namespace std;

const int Alp = 26;
const int __PRECISION = 9;
const int inf = 1e9 + 8;

const ldd PI = acos(-1);
const ldd EPS = 1e-7;

const ll MOD = 1e9 + 7;
const ll MAXN = 1e5 + 5;
const ll ROOTN = 320;
const ll LOGN = 18;
const ll INF = 1e18 + 1022;

ll dp[MAXN][201], pre[MAXN], par[MAXN][201];
int N, K;

struct line //mx + c
{
	mutable ll m, c, p;
	bool operator < (const line& o) const {return m < o.m;}
	bool operator < (ll x) const {return p < x;}
};

struct CHT_black_box : multiset<line, less<>>
{
	int mode;
	CHT_black_box(){mode = 1;}
	void set_mode(string S) {mode = (S[1] == 'i' || S[1] == 'I') ? -1 : 1;}
	ll div(ll a, ll b) {return a/b - ((a^b) < 0 && a%b);}
	bool isect(iterator x, iterator y)
	{
		if(y == end()){x->p = INF; return false;}
		if(x->m == y->m)	x->p = (x->c > y->c) ? INF : -INF;
		else	x->p = div((y->c - x->c),(x->m - y->m));
		return (x->p >= y->p);
	}
	void add(ll slope, ll intercept)
	{
		auto z = insert({mode * slope, mode * intercept, 0}), y = z++, x = y;
		while(isect(y, z))	z = erase(z);
		if(x != begin() && isect(--x, y))	isect(x, y = erase(y));
		while((y=x) != begin() && (--x)->p >= y->p)	isect(x, erase(y));
	}
	ll query(ll x)
	{
		assert(!empty());
		auto l = *lower_bound(x);
		return mode * (l.m * x + l.c);
	}
}box[201];

signed main()
{

	
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	

	ll p, q = INF;
	assert(N < MAXN);
	cin>>N>>K;
	pre[0] = 0;
	F0Re(i, N)
		cin>>p, pre[i] = p + pre[i-1];

	p = 0;

	// F0Re(i, N)
	// 	cout<<pre[i]<<' ';
	// cout<<endl;

	F0R(i, N+1)
		F0R(j, K+1)
			dp[i][j] = par[i][j] = 0;

	// F0Rr(k, j-1, i) dp[i][j] = max(dp[k][j-1] + pre[N]*pre[i] - pre[i]*pre[i] - pre[N]*pre[k] + pre[i]*pre[k]), dp[i][j]);

	F0Re(i, N)
	{
		F0Re(j, min(i, K))
		{
			if(j == 1)
				dp[i][j] = pre[i]*(pre[N] - pre[i]);
			else {pll v = box[j-1].query(pre[i]); dp[i][j] = pre[N]*pre[i] - pre[i]*pre[i] + v.ff; par[i][j] = v.ss;}
			// p = max(p, dp[i][j]);
		}
		if(i >= K) p = max(p, dp[i][K]);
		F0Re(j,min(i, K))		
			box[j].add(pre[i], dp[i][j] - pre[i] * pre[N], i);
	}


	cout<<p<<'\n';

	F0Re(i, N)
		if(dp[i][K] == p)
		{
			q = i; break;
		}

	while(q and K)
	{
		cout<<q<<' ';
		q = par[q][K--];
	}

	return 0;
}

Compilation message (stderr)

sequence.cpp:51:43: error: wrong number of template arguments (0, should be 1)
   51 | struct CHT_black_box : multiset<line, less<>>
      |                                           ^
In file included from /usr/include/c++/9/string:48,
                 from /usr/include/c++/9/bits/locale_classes.h:40,
                 from /usr/include/c++/9/bits/ios_base.h:41,
                 from /usr/include/c++/9/ios:42,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from sequence.cpp:1:
/usr/include/c++/9/bits/stl_function.h:381:12: note: provided for 'template<class _Tp> struct std::less'
  381 |     struct less : public binary_function<_Tp, _Tp, bool>
      |            ^~~~
sequence.cpp:51:44: error: template argument 2 is invalid
   51 | struct CHT_black_box : multiset<line, less<>>
      |                                            ^~
sequence.cpp:57:13: error: 'iterator' is not a type
   57 |  bool isect(iterator x, iterator y)
      |             ^~~~~~~~
sequence.cpp:57:25: error: 'iterator' is not a type
   57 |  bool isect(iterator x, iterator y)
      |                         ^~~~~~~~
sequence.cpp: In member function 'bool CHT_black_box::isect(int, int)':
sequence.cpp:59:15: error: no matching function for call to 'end()'
   59 |   if(y == end()){x->p = INF; return false;}
      |               ^
In file included from /usr/include/c++/9/bits/range_access.h:36,
                 from /usr/include/c++/9/string:54,
                 from /usr/include/c++/9/bits/locale_classes.h:40,
                 from /usr/include/c++/9/bits/ios_base.h:41,
                 from /usr/include/c++/9/ios:42,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from sequence.cpp:1:
/usr/include/c++/9/initializer_list:99:5: note: candidate: 'template<class _Tp> constexpr const _Tp* std::end(std::initializer_list<_Tp>)'
   99 |     end(initializer_list<_Tp> __ils) noexcept
      |     ^~~
/usr/include/c++/9/initializer_list:99:5: note:   template argument deduction/substitution failed:
sequence.cpp:59:15: note:   candidate expects 1 argument, 0 provided
   59 |   if(y == end()){x->p = INF; return false;}
      |               ^
In file included from /usr/include/c++/9/string:54,
                 from /usr/include/c++/9/bits/locale_classes.h:40,
                 from /usr/include/c++/9/bits/ios_base.h:41,
                 from /usr/include/c++/9/ios:42,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from sequence.cpp:1:
/usr/include/c++/9/bits/range_access.h:68:5: note: candidate: 'template<class _Container> decltype (__cont.end()) std::end(_Container&)'
   68 |     end(_Container& __cont) -> decltype(__cont.end())
      |     ^~~
/usr/include/c++/9/bits/range_access.h:68:5: note:   template argument deduction/substitution failed:
sequence.cpp:59:15: note:   candidate expects 1 argument, 0 provided
   59 |   if(y == end()){x->p = INF; return false;}
      |               ^
In file included from /usr/include/c++/9/string:54,
                 from /usr/include/c++/9/bits/locale_classes.h:40,
                 from /usr/include/c++/9/bits/ios_base.h:41,
                 from /usr/include/c++/9/ios:42,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from sequence.cpp:1:
/usr/include/c++/9/bits/range_access.h:78:5: note: candidate: 'template<class _Container> decltype (__cont.end()) std::end(const _Container&)'
   78 |     end(const _Container& __cont) -> decltype(__cont.end())
      |     ^~~
/usr/include/c++/9/bits/range_access.h:78:5: note:   template argument deduction/substitution failed:
sequence.cpp:59:15: note:   candidate expects 1 argument, 0 provided
   59 |   if(y == end()){x->p = INF; return false;}
      |               ^
In file included from /usr/include/c++/9/string:54,
                 from /usr/include/c++/9/bits/locale_classes.h:40,
                 from /usr/include/c++/9/bits/ios_base.h:41,
                 from /usr/include/c++/9/ios:42,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from sequence.cpp:1:
/usr/include/c++/9/bits/range_access.h:97:5: note: candidate: 'template<class _Tp, long unsigned int _Nm> _Tp* std::end(_Tp (&)[_Nm])'
   97 |     end(_Tp (&__arr)[_Nm])
      |     ^~~
/usr/include/c++/9/bits/range_access.h:97:5: note:   template argument deduction/substitution failed:
sequence.cpp:59:15: note:   candidate expects 1 argument, 0 provided
   59 |   if(y == end()){x->p = INF; return false;}
      |               ^
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
                 from sequence.cpp:1:
/usr/include/c++/9/valarray:1234:5: note: candidate: 'template<class _Tp> _Tp* std::end(std::valarray<_Tp>&)'
 1234 |     end(valarray<_Tp>& __va)
      |     ^~~
/usr/include/c++/9/valarray:1234:5: note:   template argument deduction/substitution failed:
sequence.cpp:59:15: note:   candidate expects 1 argument, 0 provided
   59 |   if(y == end()){x->p = INF; return false;}
      |               ^
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
                 from sequence.cpp:1:
/usr/include/c++/9/valarray:1244:5: note: candidate: 'template<class _Tp> const _Tp* std::end(const std::valarray<_Tp>&)'
 1244 |     end(const valarray<_Tp>& __va)
      |     ^~~
/usr/include/c++/9/valarray:1244:5: note:   template argument deduction/substitution failed:
sequence.cpp:59:15: note:   candidate expects 1 argument, 0 provided
   59 |   if(y == end()){x->p = INF; return false;}
      |               ^
sequence.cpp:59:19: error: base operand of '->' is not a pointer
   59 |   if(y == end()){x->p = INF; return false;}
      |                   ^~
sequence.cpp:60:7: error: base operand of '->' is not a pointer
   60 |   if(x->m == y->m) x->p = (x->c > y->c) ? INF : -INF;
      |       ^~
sequence.cpp:60:15: error: base operand of '->' is not a pointer
   60 |   if(x->m == y->m) x->p = (x->c > y->c) ? INF : -INF;
      |               ^~
sequence.cpp:60:21: error: base operand of '->' is not a pointer
   60 |   if(x->m == y->m) x->p = (x->c > y->c) ? INF : -INF;
      |                     ^~
sequence.cpp:60:29: error: base operand of '->' is not a pointer
   60 |   if(x->m == y->m) x->p = (x->c > y->c) ? INF : -INF;
      |                             ^~
sequence.cpp:60:36: error: base operand of '->' is not a pointer
   60 |   if(x->m == y->m) x->p = (x->c > y->c) ? INF : -INF;
      |                                    ^~
sequence.cpp:61:9: error: base operand of '->' is not a pointer
   61 |   else x->p = div((y->c - x->c),(x->m - y->m));
      |         ^~
sequence.cpp:61:21: error: base operand of '->' is not a pointer
   61 |   else x->p = div((y->c - x->c),(x->m - y->m));
      |                     ^~
sequence.cpp:61:28: error: base operand of '->' is not a pointer
   61 |   else x->p = div((y->c - x->c),(x->m - y->m));
      |                            ^~
sequence.cpp:61:35: error: base operand of '->' is not a pointer
   61 |   else x->p = div((y->c - x->c),(x->m - y->m));
      |                                   ^~
sequence.cpp:61:42: error: base operand of '->' is not a pointer
   61 |   else x->p = div((y->c - x->c),(x->m - y->m));
      |                                          ^~
sequence.cpp:62:12: error: base operand of '->' is not a pointer
   62 |   return (x->p >= y->p);
      |            ^~
sequence.cpp:62:20: error: base operand of '->' is not a pointer
   62 |   return (x->p >= y->p);
      |                    ^~
sequence.cpp: In member function 'void CHT_black_box::add(long long int, long long int)':
sequence.cpp:66:12: error: 'insert' was not declared in this scope; did you mean 'isect'?
   66 |   auto z = insert({mode * slope, mode * intercept, 0}), y = z++, x = y;
      |            ^~~~~~
      |            isect
sequence.cpp:67:15: error: 'y' was not declared in this scope
   67 |   while(isect(y, z)) z = erase(z);
      |               ^
sequence.cpp:67:26: error: 'erase' was not declared in this scope
   67 |   while(isect(y, z)) z = erase(z);
      |                          ^~~~~
sequence.cpp:68:6: error: 'x' was not declared in this scope
   68 |   if(x != begin() && isect(--x, y)) isect(x, y = erase(y));
      |      ^
sequence.cpp:68:17: error: no matching function for call to 'begin()'
   68 |   if(x != begin() && isect(--x, y)) isect(x, y = erase(y));
      |                 ^
In file included from /usr/include/c++/9/bits/range_access.h:36,
                 from /usr/include/c++/9/string:54,
                 from /usr/include/c++/9/bits/locale_classes.h:40,
                 from /usr/include/c++/9/bits/ios_base.h:41,
                 from /usr/include/c++/9/ios:42,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from sequence.cpp:1:
/usr/include/c++/9/initializer_list:89:5: note: candidate: 'template<class _Tp> constexpr const _Tp* std::begin(std::initializer_list<_Tp>)'
   89 |     begin(initializer_list<_Tp> __ils) noexcept
      |     ^~~~~
/usr/include/c++/9/initializer_list:89:5: note:   template argument deduction/substitution failed:
sequence.cpp:68:17: note:   candidate expects 1 argument, 0 provided
   68 |   if(x != begin() && isect(--x, y)) isect(x, y = erase(y));
      |                 ^
In file included from /usr/include/c++/9/string:54,
                 from /usr/include/c++/9/bits/locale_classes.h:40,
                 from /usr/include/c++/9/bits/ios_base.h:41,
                 from /usr/include/c++/9/ios:42,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from sequence.cpp:1:
/usr/include/c++/9/bits/range_access.h:48:5: note: candidate: 'template<class _Container> decltype (__cont.begin()) std::begin(_Container&)'
   48 |     begin(_Container& __cont) -> decltype(__cont.begin())
      |     ^~~~~
/usr/include/c++/9/bits/range_access.h:48:5: note:   template argument deduction/substitution failed:
sequence.cpp:68:17: note:   candidate expects 1 argument, 0 provided
   68 |   if(x != begin() && isect(--x, y)) isect(x, y = erase(y));
      |                 ^
In file included from /usr/include/c++/9/string:54,
                 from /usr/include/c++/9/bits/locale_classes.h:40,
                 from /usr/include/c++/9/bits/ios_base.h:41,
                 from /usr/include/c++/9/ios:42,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from sequence.cpp:1:
/usr/include/c++/9/bits/range_access.h:58:5: note: candidate: 'template<class _Container> decltype (__cont.begin()) std::begin(const _Container&)'
   58 |     begin(const _Container& __cont) -> decltype(__cont.begin())
      |     ^~~~~
/usr/include/c++/9/bits/range_access.h:58:5: note:   template argument deduction/substitution failed:
sequence.cpp:68:17: note:   candidate expects 1 argument, 0 provided
   68 |   if(x != begin() && isect(--x, y)) isect(x, y = erase(y));
      |                 ^
In file included from /usr/include/c++/9/string:54,
                 from /usr/include/c++/9/bits/locale_classes.h:40,
                 from /usr/include/c++/9/bits/ios_base.h:41,
                 from /usr/include/c++/9/ios:42,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from sequence.cpp:1:
/usr/include/c++/9/bits/range_access.h:87:5: note: candidate: 'template<class _Tp, long unsigned int _Nm> _Tp* std::begin(_Tp (&)[_Nm])'
   87 |     begin(_Tp (&__arr)[_Nm])
      |     ^~~~~
/usr/include/c++/9/bits/range_access.h:87:5: note:   template argument deduction/substitution failed:
sequence.cpp:68:17: note:   candidate expects 1 argument, 0 provided
   68 |   if(x != begin() && isect(--x, y)) isect(x, y = erase(y));
      |                 ^
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
                 from sequence.cpp:1:
/usr/include/c++/9/valarray:1214:5: note: candidate: 'template<class _Tp> _Tp* std::begin(std::valarray<_Tp>&)'
 1214 |     begin(valarray<_Tp>& __va)
      |     ^~~~~
/usr/include/c++/9/valarray:1214:5: note:   template argument deduction/substitution failed:
sequence.cpp:68:17: note:   candidate expects 1 argument, 0 provided
   68 |   if(x != begin() && isect(--x, y)) isect(x, y = erase(y));
      |                 ^
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:95,
                 from sequence.cpp:1:
/usr/include/c++/9/valarray:1224:5: note: candidate: 'template<class _Tp> const _Tp* std::begin(const std::valarray<_Tp>&)'
 1224 |     begin(const valarray<_Tp>& __va)
      |     ^~~~~
/usr/include/c++/9/valarray:1224:5: note:   template argument deduction/substitution failed:
sequence.cpp:68:17: note:   candidate expects 1 argument, 0 provided
   68 |   if(x != begin() && isect(--x, y)) isect(x, y = erase(y));
      |                 ^
sequence.cpp:68:33: error: 'y' was not declared in this scope
   68 |   if(x != begin() && isect(--x, y)) isect(x, y = erase(y));
      |                                 ^
sequence.cpp:68:50: error: 'erase' was not declared in this scope
   68 |   if(x != begin() && isect(--x, y)) isect(x, y = erase(y));
      |                                                  ^~~~~
sequence.cpp:69:10: error: 'y' was not declared in this scope
   69 |   while((y=x) != begin() && (--x)->p >= y->p) isect(x, erase(y));
      |          ^
sequence.cpp:69:12: error: 'x' was not declared in this scope
   69 |   while((y=x) != begin() && (--x)->p >= y->p) isect(x, erase(y));
      |            ^
sequence.cpp:69:24: error: no matching function for call to 'begin()'
   69 |   while((y=x) != begin() && (--x)->p >= y->p) isect(x, erase(y));
      |                        ^
In file included from /usr/include/c++/9/bits/range_access.h:36,
                 from /usr/include/c++/9/string:54,
                 from /usr/include/c++/9/bits/locale_classes.h:40,
                 from /usr/include/c++/9/bits/ios_base.h:41,
                 from /usr/include/c++/9/ios:42,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from sequence.cpp:1:
/usr/include/c++/9/initializer_list:89:5: note: candidate: 'template<class _Tp> constexpr const _Tp* std::begin(std::initializer_list<_Tp>)'
   89 |     begin(initializer_list<_Tp> __ils) noexcept
      |     ^~~~~
/usr/include/c++/9/initializer_list:89:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:24: note:   candidate expects 1 argument, 0 provided
   69 |   while((y=x) != begin() && (--x)->p >= y->p) isect(x, erase(y));
      |                        ^
In file included from /usr/include/c++/9/string:54,
                 from /usr/include/c++/9/bits/locale_classes.h:40,
                 from /usr/include/c++/9/bits/ios_base.h:41,
                 from /usr/include/c++/9/ios:42,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from sequence.cpp:1:
/usr/include/c++/9/bits/range_access.h:48:5: note: candidate: 'template<class _Container> decltype (__cont.begin()) std::begin(_Container&)'
   48 |     begin(_Container& __cont) -> decltype(__cont.begin())
      |     ^~~~~
/usr/include/c++/9/bits/range_access.h:48:5: note:   template argument deduction/substitution failed:
sequence.cpp:69:24: note:   candidate expects 1 argument, 0 provided
   69 |   while((y=x) != begin() && (--x)->p >= y->p) isect(x, erase(y));
      |                        ^
In file included from /usr/include/c++/9/string:54,
                 from /usr/include/c++/9/bits/locale_classes.h:40,
                 from /usr/include/c++/9/bits/ios_base.h:41,
                 from /usr/include/c++/9/ios:42,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,