oj.uz

Submission #495279

# Submission time Handle Problem Language Result Execution time Memory
495279 2021-12-18T08:32:59 Z Ierus Gift (IZhO18_nicegift) C++17
Compilation error
 0 ms 0 KB 
#include<bits/stdc++.h>
/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
*/
using namespace std;
#pragma GCC optimize ("unroll-loops,Ofast,O3")
#pragma GCC target("avx,avx2,fma")
#define F first
#define S second
#define int long long
#define sz(x) (int)x.size()
#define pb push_back
#define eb emplace_back
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()
#define NFS ios_base::sync_with_stdio(0) , cin.tie(0) , cout.tie(0) ;
#define file(s) if (fopen(s".in", "r")) freopen(s".in", "r", stdin), freopen(s".out", "w", stdout)
//#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
typedef long long ll;
const int E = 1e6+777;
const long long inf = 1e18+777;
const int N = 1e5+777;
const int MOD = 1e9+7;
int n, m;
pair<int,int> a[E];
set<pair<int,int>> st;
vector<pair<int,int>> res;
signed main(){auto solve=[&](){
	cin >> n >> m;
	for(int i = 1; i <= n; ++i){
		cin >> a[i].F, a[i].S = i;
		if(a[i].F > 0){
			st.insert(a[i]);	
		}
	}
//	cerr << "ST\n";
//	for(auto it : st){
//		cerr << it.F << ' ' << it.S << '\n';
//	}
//	cerr << '\n';
	while(sz(st) > 1){
		auto[val1, pos1] = *(--st.end());
		auto[val2, pos2] = *--(--st.end());
		st.erase({val1,pos1});
		st.erase({val2,pos2});
//		cerr << "v1: " << val1 << " p1: " << pos1 << " v2: " << val2 << " p2: " << pos2 << '\n';
		val1--,val2--;
		if(val1 > 0) st.insert({val1,pos1});
		if(val2 > 0) st.insert({val2,pos2});
		res.pb({pos1,pos2});
	}
	if(sz(st) >= 1){
		cout << -1;
	}else{
		cerr << sz(res) << '\n';
		for(auto v : res){
			cout << 1 << ' ';
			for(auto it : v)
				cout << it << ' ';
			cout << '\n';
		}
	}
};NFS;solve();}

Compilation message

nicegift.cpp: In lambda function:
nicegift.cpp:60:18: error: no matching function for call to 'begin(std::pair<long long int, long long int>&)'
   60 |    for(auto it : v)
      |                  ^
In file included from /usr/include/c++/10/bits/range_access.h:36,
                 from /usr/include/c++/10/string:54,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from nicegift.cpp:1:
/usr/include/c++/10/initializer_list:90:5: note: candidate: 'template<class _Tp> constexpr const _Tp* std::begin(std::initializer_list<_Tp>)'
   90 |     begin(initializer_list<_Tp> __ils) noexcept
      |     ^~~~~
/usr/include/c++/10/initializer_list:90:5: note:   template argument deduction/substitution failed:
nicegift.cpp:60:18: note:   'std::pair<long long int, long long int>' is not derived from 'std::initializer_list<_Tp>'
   60 |    for(auto it : v)
      |                  ^
In file included from /usr/include/c++/10/string:54,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from nicegift.cpp:1:
/usr/include/c++/10/bits/range_access.h:51:5: note: candidate: 'template<class _Container> constexpr decltype (__cont.begin()) std::begin(_Container&)'
   51 |     begin(_Container& __cont) -> decltype(__cont.begin())
      |     ^~~~~
/usr/include/c++/10/bits/range_access.h:51:5: note:   template argument deduction/substitution failed:
/usr/include/c++/10/bits/range_access.h: In substitution of 'template<class _Container> constexpr decltype (__cont.begin()) std::begin(_Container&) [with _Container = std::pair<long long int, long long int>]':
nicegift.cpp:60:18:   required from here
/usr/include/c++/10/bits/range_access.h:51:50: error: 'struct std::pair<long long int, long long int>' has no member named 'begin'
   51 |     begin(_Container& __cont) -> decltype(__cont.begin())
      |                                           ~~~~~~~^~~~~
/usr/include/c++/10/bits/range_access.h:61:5: note: candidate: 'template<class _Container> constexpr decltype (__cont.begin()) std::begin(const _Container&)'
   61 |     begin(const _Container& __cont) -> decltype(__cont.begin())
      |     ^~~~~
/usr/include/c++/10/bits/range_access.h:61:5: note:   template argument deduction/substitution failed:
/usr/include/c++/10/bits/range_access.h: In substitution of 'template<class _Container> constexpr decltype (__cont.begin()) std::begin(const _Container&) [with _Container = std::pair<long long int, long long int>]':
nicegift.cpp:60:18:   required from here
/usr/include/c++/10/bits/range_access.h:61:56: error: 'const struct std::pair<long long int, long long int>' has no member named 'begin'
   61 |     begin(const _Container& __cont) -> decltype(__cont.begin())
      |                                                 ~~~~~~~^~~~~
/usr/include/c++/10/bits/range_access.h:90:5: note: candidate: 'template<class _Tp, long unsigned int _Nm> constexpr _Tp* std::begin(_Tp (&)[_Nm])'
   90 |     begin(_Tp (&__arr)[_Nm])
      |     ^~~~~
/usr/include/c++/10/bits/range_access.h:90:5: note:   template argument deduction/substitution failed:
nicegift.cpp:60:18: note:   mismatched types '_Tp [_Nm]' and 'std::pair<long long int, long long int>'
   60 |    for(auto it : v)
      |                  ^
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from nicegift.cpp:1:
/usr/include/c++/10/valarray:1214:5: note: candidate: 'template<class _Tp> _Tp* std::begin(std::valarray<_Tp>&)'
 1214 |     begin(valarray<_Tp>& __va)
      |     ^~~~~
/usr/include/c++/10/valarray:1214:5: note:   template argument deduction/substitution failed:
nicegift.cpp:60:18: note:   'std::pair<long long int, long long int>' is not derived from 'std::valarray<_Tp>'
   60 |    for(auto it : v)
      |                  ^
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from nicegift.cpp:1:
/usr/include/c++/10/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++/10/valarray:1224:5: note:   template argument deduction/substitution failed:
nicegift.cpp:60:18: note:   'std::pair<long long int, long long int>' is not derived from 'const std::valarray<_Tp>'
   60 |    for(auto it : v)
      |                  ^
nicegift.cpp:60:18: error: no matching function for call to 'end(std::pair<long long int, long long int>&)'
In file included from /usr/include/c++/10/bits/range_access.h:36,
                 from /usr/include/c++/10/string:54,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from nicegift.cpp:1:
/usr/include/c++/10/initializer_list:101:5: note: candidate: 'template<class _Tp> constexpr const _Tp* std::end(std::initializer_list<_Tp>)'
  101 |     end(initializer_list<_Tp> __ils) noexcept
      |     ^~~
/usr/include/c++/10/initializer_list:101:5: note:   template argument deduction/substitution failed:
nicegift.cpp:60:18: note:   'std::pair<long long int, long long int>' is not derived from 'std::initializer_list<_Tp>'
   60 |    for(auto it : v)
      |                  ^
In file included from /usr/include/c++/10/string:54,
                 from /usr/include/c++/10/bits/locale_classes.h:40,
                 from /usr/include/c++/10/bits/ios_base.h:41,
                 from /usr/include/c++/10/ios:42,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from nicegift.cpp:1:
/usr/include/c++/10/bits/range_access.h:71:5: note: candidate: 'template<class _Container> constexpr decltype (__cont.end()) std::end(_Container&)'
   71 |     end(_Container& __cont) -> decltype(__cont.end())
      |     ^~~
/usr/include/c++/10/bits/range_access.h:71:5: note:   template argument deduction/substitution failed:
/usr/include/c++/10/bits/range_access.h: In substitution of 'template<class _Container> constexpr decltype (__cont.end()) std::end(_Container&) [with _Container = std::pair<long long int, long long int>]':
nicegift.cpp:60:18:   required from here
/usr/include/c++/10/bits/range_access.h:71:48: error: 'struct std::pair<long long int, long long int>' has no member named 'end'
   71 |     end(_Container& __cont) -> decltype(__cont.end())
      |                                         ~~~~~~~^~~
/usr/include/c++/10/bits/range_access.h:81:5: note: candidate: 'template<class _Container> constexpr decltype (__cont.end()) std::end(const _Container&)'
   81 |     end(const _Container& __cont) -> decltype(__cont.end())
      |     ^~~
/usr/include/c++/10/bits/range_access.h:81:5: note:   template argument deduction/substitution failed:
/usr/include/c++/10/bits/range_access.h: In substitution of 'template<class _Container> constexpr decltype (__cont.end()) std::end(const _Container&) [with _Container = std::pair<long long int, long long int>]':
nicegift.cpp:60:18:   required from here
/usr/include/c++/10/bits/range_access.h:81:54: error: 'const struct std::pair<long long int, long long int>' has no member named 'end'
   81 |     end(const _Container& __cont) -> decltype(__cont.end())
      |                                               ~~~~~~~^~~
/usr/include/c++/10/bits/range_access.h:100:5: note: candidate: 'template<class _Tp, long unsigned int _Nm> constexpr _Tp* std::end(_Tp (&)[_Nm])'
  100 |     end(_Tp (&__arr)[_Nm])
      |     ^~~
/usr/include/c++/10/bits/range_access.h:100:5: note:   template argument deduction/substitution failed:
nicegift.cpp:60:18: note:   mismatched types '_Tp [_Nm]' and 'std::pair<long long int, long long int>'
   60 |    for(auto it : v)
      |                  ^
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from nicegift.cpp:1:
/usr/include/c++/10/valarray:1234:5: note: candidate: 'template<class _Tp> _Tp* std::end(std::valarray<_Tp>&)'
 1234 |     end(valarray<_Tp>& __va)
      |     ^~~
/usr/include/c++/10/valarray:1234:5: note:   template argument deduction/substitution failed:
nicegift.cpp:60:18: note:   'std::pair<long long int, long long int>' is not derived from 'std::valarray<_Tp>'
   60 |    for(auto it : v)
      |                  ^
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from nicegift.cpp:1:
/usr/include/c++/10/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++/10/valarray:1244:5: note:   template argument deduction/substitution failed:
nicegift.cpp:60:18: note:   'std::pair<long long int, long long int>' is not derived from 'const std::valarray<_Tp>'
   60 |    for(auto it : v)
      |                  ^