Submission #619227

#	Time	Username	Problem	Language	Result	Execution time	Memory
619227		HappyPacMan	Dynamic Diameter (CEOI19_diameter)	C++14	Compilation error	0 ms	0 KiB

diameter

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int maxn = 1e5 + 3;
vector<pair<int,int> > adj[maxn],edges;
vector<int> partOf[maxn];
vector<ll> seg[maxn],lazy[maxn];
bool isCent[maxn];
int subSz[maxn],centRoot,timer[maxn];
unordered_map<int,int> tin[maxn],tout[maxn],edgeRoot[maxn];
unordered_map<int,ll> costEdge[maxn];
ll tempResult[maxn];
priority_queue<pair<ll,int> > bestEdge[maxn],result; 
ll cost[maxn];
 
void dfsSz(int u,int p){
	subSz[u] = 1;
	for(auto [v,w] : adj[u]){
		if(v != p && !isCent[v]){
			dfsSz(v,u);
			subSz[u] += subSz[v];
		}
	}
}
int fnCent(int u,int p,int s){
	for(auto [v,w] : adj[u]){
		if(v != p && !isCent[v] && subSz[v] > s/2){
			return fnCent(v,u,s);
		}
	}
	return u;
}
void dfsTour(int c,int u,int p){
	for(auto [v,w] : adj[u]){
		if(v != p && !isCent[v]){
			partOf[w].emplace_back(c);
			tin[c][w] = timer[c]++;
			dfsTour(c,v,u);
			tout[c][w] = timer[c]++;
		}
	}
}
void dfsEdgeRoot(int c,int d,int u,int p){
	for(auto [v,w] : adj[u]){
		if(v != p && !isCent[v]){
			edgeRoot[c][w] = d;
			dfsEdgeRoot(c,d,v,u);
		}
	}
}
void dfsCent(int u,int p){
	dfsSz(u,p);
	int cent = fnCent(u,u,subSz[u]);
	isCent[cent] = true;
	if(p != -1){
		centRoot = cent;
	}
	dfsTour(cent,cent,cent);
	for(auto [v,w] : adj[cent]){
		if(!isCent[v]){
			bestEdge[cent].emplace(0,w);
			edgeRoot[cent][w] = w;
			dfsEdgeRoot(cent,w,v,cent);
		}
	}
	seg[cent].resize(4*timer[cent]);
	lazy[cent].resize(4*timer[cent]);
	for(auto [v,w] : adj[cent]){
		if(!isCent[v]){
			dfsCent(v,cent);
		}
	}
}
 
// Segment Tree + Lazy Propagation
void push(int c,int i){
	lazy[c][i<<1] += lazy[c][i];
	seg[c][i<<1] += lazy[c][i];
	lazy[c][i<<1|1] += lazy[c][i];
	seg[c][i<<1|1] += lazy[c][i];
	lazy[c][i] = 0;
}
void upd(int c,int i,int l,int r,int ul,int ur,ll v){
	if(ul <= l && r <= ur){
		seg[c][i] += v;
		lazy[c][i] += v;
	}else if(ul > r || ur < l){
		return;
	}else{
		int m = (l+r)/2;
		push(c,i);
		upd(c,i<<1,l,m,ul,ur,v);
		upd(c,i<<1|1,m+1,r,ul,ur,v);
		seg[c][i] = max(seg[c][i<<1],seg[c][i<<1|1]);
	}
}
ll qry(int c,int i,int l,int r,int ql,int qr){
	if(ql <= l && r <= qr){
		return seg[c][i];
	}else if(ql > r || qr < l){
		return 0;
	}else{
		int m = (l+r)/2;
		push(c,i);
		return max(qry(c,i<<1,l,m,ql,qr),qry(c,i<<1|1,m+1,r,ql,qr));
	}
}
 
int32_t main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
 
	int n,q;
	ll w;
	cin >> n >> q >> w;
	for(int i=1;i<n;i++){
		int u,v;
		ll w;
		cin >> u >> v >> w;
		u--; v--;
		adj[u].emplace_back(v,i);
		adj[v].emplace_back(u,i);
		edges.emplace_back(u,v);
		cost[i] = w;
	}
	dfsCent(0,-1);
	for(int i=1;i<n;i++){
		for(int it : partOf[i]){
			int z = edgeRoot[it][i];
			upd(it,1,0,timer[it]-1,tin[it][i],tout[it][i]-1,cost[i]);
			costEdge[it][z] = qry(it,1,0,timer[it]-1,tin[it][z],tout[it][z]);
			bestEdge[it].emplace(costEdge[it][z],z);
		}
	}
	for(int i=0;i<n;i++){
		vector<pair<ll,int> > best;
		while(!bestEdge[i].empty() && best.size() < 2){
			auto [u,v] = bestEdge[i].top();
			bestEdge[i].pop();
			if(costEdge[i][v] == u && (best.empty() || best.back() != make_pair(u,v))){
				best.emplace_back(u,v);
			}
		}
		ll sum = 0;
		for(auto it : best){
			sum += it.first;
		}
		for(auto it : best){
			bestEdge[i].emplace(it);
		}
		tempResult[i] = sum;
		result.emplace(tempResult[i],i);
	}
	ll last = 0;
	while(q--){
		int i;
		ll j;
		cin >> i >> j;
		i = (i+last)%(n-1)+1;
		j = (j+last)%w;
		ll df = j-cost[i];
		assert(partOf[i] <= 20);
		for(int it : partOf[i]){
			int z = edgeRoot[it][i];
			upd(it,1,0,timer[it]-1,tin[it][i],tout[it][i]-1,df);
			costEdge[it][z] = qry(it,1,0,timer[it]-1,tin[it][z],tout[it][z]);
			bestEdge[it].emplace(costEdge[it][z],z);
			vector<pair<ll,int> > best;
			while(!bestEdge[it].empty() && best.size() < 2){
				auto [u,v] = bestEdge[it].top();
				bestEdge[it].pop();
				if(costEdge[it][v] == u && (best.empty() || best.back() != make_pair(u,v))){
					best.emplace_back(u,v);
				}
			}
			ll sum = 0;
			for(auto it2 : best){
				sum += it2.first;
			}
			for(auto it2 : best){
				bestEdge[it].emplace(it2);
			}
			tempResult[it] = sum;
			result.emplace(tempResult[it],it);
		}
		cost[i] = j;
		while(true){
			auto [u,v] = result.top();
			if(tempResult[v] == u){
				break;
			}
			result.pop();
		}
		last = result.top().first;
		cout << result.top().first << "\n";
	}
}

Compilation message (stderr)

diameter.cpp: In function 'void dfsSz(int, int)':
diameter.cpp:18:11: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   18 |  for(auto [v,w] : adj[u]){
      |           ^
diameter.cpp: In function 'int fnCent(int, int, int)':
diameter.cpp:26:11: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   26 |  for(auto [v,w] : adj[u]){
      |           ^
diameter.cpp: In function 'void dfsTour(int, int, int)':
diameter.cpp:34:11: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   34 |  for(auto [v,w] : adj[u]){
      |           ^
diameter.cpp: In function 'void dfsEdgeRoot(int, int, int, int)':
diameter.cpp:44:11: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   44 |  for(auto [v,w] : adj[u]){
      |           ^
diameter.cpp: In function 'void dfsCent(int, int)':
diameter.cpp:59:11: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   59 |  for(auto [v,w] : adj[cent]){
      |           ^
diameter.cpp:68:11: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   68 |  for(auto [v,w] : adj[cent]){
      |           ^
diameter.cpp: In function 'int32_t main()':
diameter.cpp:138:9: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  138 |    auto [u,v] = bestEdge[i].top();
      |         ^
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from diameter.cpp:1:
diameter.cpp:162:20: error: no match for 'operator<=' (operand types are 'std::vector<int>' and 'int')
  162 |   assert(partOf[i] <= 20);
      |          ~~~~~~~~~ ^~ ~~
      |                  |    |
      |                  |    int
      |                  std::vector<int>
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from diameter.cpp:1:
/usr/include/c++/10/bits/regex.h:1086:5: note: candidate: 'template<class _BiIter> bool std::__cxx11::operator<=(const std::__cxx11::sub_match<_BiIter>&, const std::__cxx11::sub_match<_BiIter>&)'
 1086 |     operator<=(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1086:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from diameter.cpp:1:
diameter.cpp:162:23: note:   'std::vector<int>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
  162 |   assert(partOf[i] <= 20);
      |                       ^~
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from diameter.cpp:1:
/usr/include/c++/10/bits/regex.h:1192:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator<=(std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&, const std::__cxx11::sub_match<_BiIter>&)'
 1192 |     operator<=(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1192:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from diameter.cpp:1:
diameter.cpp:162:23: note:   'std::vector<int>' is not derived from 'std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>'
  162 |   assert(partOf[i] <= 20);
      |                       ^~
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from diameter.cpp:1:
/usr/include/c++/10/bits/regex.h:1285:5: note: candidate: 'template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator<=(const std::__cxx11::sub_match<_BiIter>&, std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&)'
 1285 |     operator<=(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1285:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from diameter.cpp:1:
diameter.cpp:162:23: note:   'std::vector<int>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
  162 |   assert(partOf[i] <= 20);
      |                       ^~
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from diameter.cpp:1:
/usr/include/c++/10/bits/regex.h:1359:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<=(const typename std::iterator_traits<_Iter>::value_type*, const std::__cxx11::sub_match<_BiIter>&)'
 1359 |     operator<=(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1359:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from diameter.cpp:1:
diameter.cpp:162:23: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
  162 |   assert(partOf[i] <= 20);
      |                       ^~
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from diameter.cpp:1:
/usr/include/c++/10/bits/regex.h:1453:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<=(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)'
 1453 |     operator<=(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1453:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from diameter.cpp:1:
diameter.cpp:162:23: note:   'std::vector<int>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
  162 |   assert(partOf[i] <= 20);
      |                       ^~
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from diameter.cpp:1:
/usr/include/c++/10/bits/regex.h:1531:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<=(const typename std::iterator_traits<_Iter>::value_type&, const std::__cxx11::sub_match<_BiIter>&)'
 1531 |     operator<=(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1531:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from diameter.cpp:1:
diameter.cpp:162:23: note:   mismatched types 'const std::__cxx11::sub_match<_BiIter>' and 'int'
  162 |   assert(partOf[i] <= 20);
      |                       ^~
In file included from /usr/include/c++/10/regex:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:110,
                 from diameter.cpp:1:
/usr/include/c++/10/bits/regex.h:1631:5: note: candidate: 'template<class _Bi_iter> bool std::__cxx11::operator<=(const std::__cxx11::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)'
 1631 |     operator<=(const sub_match<_Bi_iter>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/regex.h:1631:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from diameter.cpp:1:
diameter.cpp:162:23: note:   'std::vector<int>' is not derived from 'const std::__cxx11::sub_match<_BiIter>'
  162 |   assert(partOf[i] <= 20);
      |                       ^~
In file included from /usr/include/c++/10/bits/stl_algobase.h:64,
                 from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 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 diameter.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:508:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator<=(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)'
  508 |     operator<=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_pair.h:508:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from diameter.cpp:1:
diameter.cpp:162:23: note:   'std::vector<int>' is not derived from 'const std::pair<_T1, _T2>'
  162 |   assert(partOf[i] <= 20);
      |                       ^~
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 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 diameter.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:384:5: note: candidate: 'template<class _Iterator> bool std::operator<=(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)'
  384 |     operator<=(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:384:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from diameter.cpp:1:
diameter.cpp:162:23: note:   'std::vector<int>' is not derived from 'const std::reverse_iterator<_Iterator>'
  162 |   assert(partOf[i] <= 20);
      |                       ^~
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 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 diameter.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:422:5: note: candidate: 'template<class _IteratorL, class _IteratorR> bool std::operator<=(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)'
  422 |     operator<=(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:422:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from diameter.cpp:1:
diameter.cpp:162:23: note:   'std::vector<int>' is not derived from 'const std::reverse_iterator<_Iterator>'
  162 |   assert(partOf[i] <= 20);
      |                       ^~
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 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 diameter.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:1460:5: note: candidate: 'template<class _IteratorL, class _IteratorR> bool std::operator<=(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorR>&)'
 1460 |     operator<=(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:1460:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from diameter.cpp:1:
diameter.cpp:162:23: note:   'std::vector<int>' is not derived from 'const std::move_iterator<_IteratorL>'
  162 |   assert(partOf[i] <= 20);
      |                       ^~
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 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 diameter.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:1513:5: note: candidate: 'template<class _Iterator> bool std::operator<=(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorL>&)'
 1513 |     operator<=(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:1513:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from diameter.cpp:1:
diameter.cpp:162:23: note:   'std::vector<int>' is not derived from 'const std::move_iterator<_IteratorL>'
  162 |   assert(partOf[i] <= 20);
      |                       ^~
In file included from /usr/include/c++/10/string:55,
                 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 diameter.cpp:1:
/usr/include/c++/10/bits/basic_string.h:6343:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator<=(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)'
 6343 |     operator<=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6343:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from diameter.cpp:1:
diameter.cpp:162:23: note:   'std::vector<int>' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>'
  162 |   assert(partOf[i] <= 20);
      |                       ^~
In file included from /usr/include/c++/10/string:55,
                 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 diameter.cpp:1:
/usr/include/c++/10/bits/basic_string.h:6356:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator<=(const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*)'
 6356 |     operator<=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6356:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from diameter.cpp:1:
diameter.cpp:162:23: note:   'std::vector<int>' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>'
  162 |   assert(partOf[i] <= 20);
      |                       ^~
In file included from /usr/include/c++/10/string:55,
                 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 diameter.cpp:1:
/usr/include/c++/10/bits/basic_string.h:6368:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator<=(const _CharT*, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&)'
 6368 |     operator<=(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6368:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/inc