Submission #1066664

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1066664	2024-08-20T04:30:49 Z	SoMotThanhXuan	Swapping Cities (APIO20_swap)	C++17	Compilation error	0 ms	0 KB

swap

#include <swap.h>
#include <bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define MASK(i) (1LL << (i))
#define BIT(x, i) (((x) >> (i)) & 1)
#define FOR(i, a, b) for(int i = a; i <= b; ++i)
#define FORD(i, a, b) for(int i = b; i >= a; --i)
#define REP(i, a, b) for(int i = a; i < b; ++i)
#define REPD(i, a, b) for(int i = b; i > a; -- i)
#define ALL(v) v.begin(),v.end()
#define next __next
#define left __left
#define right __right
#define prev __prev
const int MOD[6] = {(int)1e9 + 7, (int)1e9 + 2277, (int)1e9 + 5277, (int)1e9 + 8277, (int)1e9 + 9277, 998244353};
const int BASE[6] = {23309, 300, 330, 280, 2309, 256};
const int base = BASE[0];
const int mod = MOD[0];
void add(int &u, int v){
    u += v;
    if(u >= mod) u -= mod;
}
void sub(int &u, int v){
    u -= v;
    if(u < 0) u += mod;
}
void minimize(int &u, int v){
    if(u > v) u = v;
}
void maximize(int &u, int v){
    if(u < v) u = v;
}
void minimizell(long long &u, long long v){
    if(u > v) u = v;
}
void maximizell(long long &u, long long v){
    if(u < v) u = v;
}
const int maxN = 3e5 + 2;
const int maxM = 3e5 + 2;
const int maxK = 1e2 + 2;
const int INF = 1e9 + 8;
const long long INFLL = 1e18;
const int LOG = 16;
vector<pair<int, int>> adj[maxN];
int next[maxN];
bool cycle[maxN];
pair<int, pair<int, int>> edge[maxM];
int n;
int root[maxN], high[maxN];
int par[LOG + 1][maxN], Max[LOG + 1][maxN], child[maxN];
int find_root(int v){
    return root[v] = root[v] == v ? v : find_root(root[v]);
}
void dfs(int u, int p){
    for(pair<int, int> x : adj[u]){
        int v = x.first;
        int w = x.second;
        if(v == p)continue;
        high[v] = high[u] + 1;
//        cout << u << ' ' << v << "\n";
        dfs(v, u);
        ++child[u];
        par[0][v] = u;
        Max[0][v] = w;
    }
}
void dfs2(int u, int p){
    if(p){
        if(child[p] == 1){
            next[u] = Max[0][u];
        }else next[u] = next[p];
    }
    for(pair<int, int> x : adj[u]){
        int v = x.first;
        if(v != p)dfs2(v, u);
    }
}
void dfs3(int u, int p){
    for(pair<int, int> x : adj[u]){
        int v = x.first;
        if(v != p){
            dfs3(v, u);
            cycle[u] |= cycle[v];
        }
    }
}
void sparse_table(){

}

void addEdge(int u, int v, int w){
    ++n;
    u = find_root(u);
    v = find_root(v);
    root[n] = n;
    root[u] = root[v] = n;
    adj[n].push_back({u, w});
//    cout << n << ' ' << u << ' ' << v << "\n";
    if(u != v)adj[n].push_back({v, w});
}
void init(int N, int M, vector<int> U, vector<int> V[], vector<int> W[]){
    REP(i, 0, M){
        edge[i + 1] = {W[i], {U[i] + 1, V[i] + 1}};
    }
    sort(edge + 1, edge + 1 + M);
    n = N;
    FOR(i, 1, M)addEdge(edge[i].se.fi, edge[i].se.se, edge[i].fi);
    dfs(n, 0);
    high[0] = -1;
    FOR(i, 1, N)root[i] = i;
        FOR(j, 1, LOG)FOR(i, 1, n){
        par[j][i] = par[j - 1][par[j - 1][i]];
        Max[j][i] = max(Max[j - 1][i], Max[j - 1][par[j - 1][i]]);
    }
    dfs2(n, 0);
//    FOR(i, 1, n)cout << child[i] << ' ';cout << "\n";
    FOR(i, N + 1, n)if(child[i] == 1)cycle[i] = true;
    dfs3(n, 0);
//    FOR(i, 1, n)cout << next[i] << ' ';cout << "\n";
//    FOR(i, 1, n)cout << cycle[i] << ' ';cout << "\n";
}
int getMinimumFuelCapacity(int u, int v){
    int res = 0;
    if(high[u] < high[v]) swap(u, v);
    FORD(i, 0, LOG)if(high[par[i][u]] >= high[v])maximize(res, Max[i][u]),u = par[i][u];
    if(u == v){
        if(cycle[u]) return res;
        return next[u] == 0 ? -1 : next[u];
    }
    FORD(i, 0, LOG)if(par[i][u] != par[i][v]){
        maximize(res, Max[i][u]);
        maximize(res, Max[i][v]);
        u = par[i][u];
        v = par[i][v];
    }
    maximize(res, Max[0][u]);
    maximize(res, Max[0][v]);
    u = par[0][u];
    if(cycle[u]){
        return res;
    }
    else return next[u] == 0 ? - 1 : next[u];
}

Compilation message

swap.cpp: In function 'void init(int, int, std::vector<int>, std::vector<int>*, std::vector<int>*)':
swap.cpp:106:46: error: no match for 'operator+' (operand types are 'std::vector<int>' and 'int')
  106 |         edge[i + 1] = {W[i], {U[i] + 1, V[i] + 1}};
      |                                         ~~~~ ^ ~
      |                                            |   |
      |                                            |   int
      |                                            std::vector<int>
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 from /usr/include/c++/10/vector:60,
                 from swap.h:1,
                 from swap.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:508:5: note: candidate: 'template<class _Iterator> constexpr std::reverse_iterator<_Iterator> std::operator+(typename std::reverse_iterator<_Iterator>::difference_type, const std::reverse_iterator<_Iterator>&)'
  508 |     operator+(typename reverse_iterator<_Iterator>::difference_type __n,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:508:5: note:   template argument deduction/substitution failed:
swap.cpp:106:48: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
  106 |         edge[i + 1] = {W[i], {U[i] + 1, V[i] + 1}};
      |                                                ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:67,
                 from /usr/include/c++/10/vector:60,
                 from swap.h:1,
                 from swap.cpp:1:
/usr/include/c++/10/bits/stl_iterator.h:1540:5: note: candidate: 'template<class _Iterator> constexpr std::move_iterator<_IteratorL> std::operator+(typename std::move_iterator<_IteratorL>::difference_type, const std::move_iterator<_IteratorL>&)'
 1540 |     operator+(typename move_iterator<_Iterator>::difference_type __n,
      |     ^~~~~~~~
/usr/include/c++/10/bits/stl_iterator.h:1540:5: note:   template argument deduction/substitution failed:
swap.cpp:106:48: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'int'
  106 |         edge[i + 1] = {W[i], {U[i] + 1, V[i] + 1}};
      |                                                ^
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 swap.cpp:2:
/usr/include/c++/10/bits/basic_string.h:6022:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&, const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 6022 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6022:5: note:   template argument deduction/substitution failed:
swap.cpp:106:48: note:   'std::vector<int>' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
  106 |         edge[i + 1] = {W[i], {U[i] + 1, V[i] + 1}};
      |                                                ^
In file included from /usr/include/c++/10/string:56,
                 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 swap.cpp:2:
/usr/include/c++/10/bits/basic_string.tcc:1160:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const _CharT*, const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 1160 |     operator+(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/basic_string.tcc:1160:5: note:   template argument deduction/substitution failed:
swap.cpp:106:48: note:   mismatched types 'const _CharT*' and 'std::vector<int>'
  106 |         edge[i + 1] = {W[i], {U[i] + 1, V[i] + 1}};
      |                                                ^
In file included from /usr/include/c++/10/string:56,
                 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 swap.cpp:2:
/usr/include/c++/10/bits/basic_string.tcc:1180:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(_CharT, const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 1180 |     operator+(_CharT __lhs, const basic_string<_CharT, _Traits, _Alloc>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/10/bits/basic_string.tcc:1180:5: note:   template argument deduction/substitution failed:
swap.cpp:106:48: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
  106 |         edge[i + 1] = {W[i], {U[i] + 1, V[i] + 1}};
      |                                                ^
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 swap.cpp:2:
/usr/include/c++/10/bits/basic_string.h:6059:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&, const _CharT*)'
 6059 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6059:5: note:   template argument deduction/substitution failed:
swap.cpp:106:48: note:   'std::vector<int>' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
  106 |         edge[i + 1] = {W[i], {U[i] + 1, V[i] + 1}};
      |                                                ^
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 swap.cpp:2:
/usr/include/c++/10/bits/basic_string.h:6075:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&, _CharT)'
 6075 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, _CharT __rhs)
      |     ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6075:5: note:   template argument deduction/substitution failed:
swap.cpp:106:48: note:   'std::vector<int>' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
  106 |         edge[i + 1] = {W[i], {U[i] + 1, V[i] + 1}};
      |                                                ^
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 swap.cpp:2:
/usr/include/c++/10/bits/basic_string.h:6087:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 6087 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6087:5: note:   template argument deduction/substitution failed:
swap.cpp:106:48: note:   'std::vector<int>' is not derived from 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
  106 |         edge[i + 1] = {W[i], {U[i] + 1, V[i] + 1}};
      |                                                ^
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 swap.cpp:2:
/usr/include/c++/10/bits/basic_string.h:6093:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&, std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 6093 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6093:5: note:   template argument deduction/substitution failed:
swap.cpp:106:48: note:   'std::vector<int>' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
  106 |         edge[i + 1] = {W[i], {U[i] + 1, V[i] + 1}};
      |                                                ^
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 swap.cpp:2:
/usr/include/c++/10/bits/basic_string.h:6099:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 6099 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6099:5: note:   template argument deduction/substitution failed:
swap.cpp:106:48: note:   'std::vector<int>' is not derived from 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
  106 |         edge[i + 1] = {W[i], {U[i] + 1, V[i] + 1}};
      |                                                ^
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 swap.cpp:2:
/usr/include/c++/10/bits/basic_string.h:6121:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const _CharT*, std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 6121 |     operator+(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6121:5: note:   template argument deduction/substitution failed:
swap.cpp:106:48: note:   mismatched types 'const _CharT*' and 'std::vector<int>'
  106 |         edge[i + 1] = {W[i], {U[i] + 1, V[i] + 1}};
      |                                                ^
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 swap.cpp:2:
/usr/include/c++/10/bits/basic_string.h:6127:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(_CharT, std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 6127 |     operator+(_CharT __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6127:5: note:   template argument deduction/substitution failed:
swap.cpp:106:48: note:   mismatched types 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
  106 |         edge[i + 1] = {W[i], {U[i] + 1, V[i] + 1}};
      |                                                ^
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 swap.cpp:2:
/usr/include/c++/10/bits/basic_string.h:6133:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, const _CharT*)'
 6133 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6133:5: note:   template argument deduction/substitution failed:
swap.cpp:106:48: note:   'std::vector<int>' is not derived from 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
  106 |         edge[i + 1] = {W[i], {U[i] + 1, V[i] + 1}};
      |                                                ^
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 swap.cpp:2:
/usr/include/c++/10/bits/basic_string.h:6139:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(std::__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, _CharT)'
 6139 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |     ^~~~~~~~
/usr/include/c++/10/bits/basic_string.h:6139:5: note:   template argument deduction/substitution failed:
swap.cpp:106:48: note:   'std::vector<int>' is not derived from 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
  106 |         edge[i + 1] = {W[i], {U[i] + 1, V[i] + 1}};
      |                                                ^
In file included from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from swap.cpp:2:
/usr/include/c++/10/complex:331:5: note: candidate: 'template<class _Tp> std::complex<_Tp> std::operator+(const std::complex<_Tp>&, const std::complex<_Tp>&)'
  331 |     operator+(const complex<_Tp>& __x, const complex<_Tp>& __y)
      |     ^~~~~~~~
/usr/include/c++/10/complex:331:5: note:   template argument deduction/substitution failed:
swap.cpp:106:48: note:   'std::vector<int>' is not derived from 'const std::complex<_Tp>'
  106 |         edge[i + 1] = {W[i], {U[i] + 1, V[i] + 1}};
      |                                                ^
In file included from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from swap.cpp:2:
/usr/include/c++/10/complex:340:5: note: candidate: 'template<class _Tp> std::complex<_Tp> std::operator+(const std::complex<_Tp>&, const _Tp&)'
  340 |     operator+(const complex<_Tp>& __x, const _Tp& __y)
      |     ^~~~~~~~
/usr/include/c++/10/complex:340:5: note:   template argument deduction/substitution failed:
swap.cpp:106:48: note:   'std::vector<int>' is not derived from 'const std::complex<_Tp>'
  106 |         edge[i + 1] = {W[i], {U[i] + 1, V[i] + 1}};
      |                                                ^
In file included from /usr/include/c++/10/ccom