Submission #1228236

#TimeUsernameProblemLanguageResultExecution timeMemory
1228236GoodRace (IOI11_race)C++20
Compilation error
0 ms0 KiB
void calcsz(int nd, int p, int weight, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf) { lvl[nd] = lvl[p] + 1; sz[nd] = 1; pref[nd] = pref[p] + weight; sf[nd].ff = nodes.size(); nodes.pb(nd); for (pii &v: adj[nd]) { if (v.ff != p) { calcsz(v.ff, nd, v.ss, adj, sz, lvl, pref, nodes, sf); sz[nd] += sz[v.ff]; } } sf[nd].ss = nodes.size(); } void dfs(int k, int nd, int p, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf, vector<map<ll, int>*> &mp, int &ans) { int big_child = -1, mxsz = 0; for (pii &v: adj[nd]) { if (v.ff != p) { dfs(k, v.ff, nd, adj, sz, lvl, pref, nodes, sf, mp, ans); if (mxsz < sz[v.ff]) big_child = v.ff, mxsz = sz[v.ff]; } } if (big_child != -1) { mp[nd] = mp[big_child]; } else { mp[nd] = new map<ll, int>(); } for (pii &v: adj[nd]) { if (v.ff != p && v.ff != big_child) { map<ll, int> temp; for (int i = sf[v.ff].ff; i < sf[v.ff].ss; i++) { if (mp[nd]->find(k + 2*pref[nd] - pref[i]) != mp[nd]->end()) { ans = min(ans, lvl[i] + (*mp[nd])[k + 2 * pref[nd] - pref[i]] - 2 * lvl[nd]); } if (temp.find(pref[i]) != temp.end()) temp[pref[i]] = min(temp[pref[i]], lvl[i]); else temp[pref[i]] = lvl[i]; } for (auto &j: temp) { if (mp[nd]->find(j.ff) != mp[nd]->end()) (*mp[nd])[j.ff] = min((*mp[nd])[j.ff], j.ss); else (*mp[nd])[j.ff] = j.ss; } } } if (mp[nd]->find(k + pref[nd]) != mp[nd]->end()) ans = min(ans, (*mp[nd])[k + pref[nd]] - lvl[nd]); if (mp[nd]->find(pref[nd]) != mp[nd]->end()) (*mp[nd])[pref[nd]] = min((*mp[nd])[pref[nd]], lvl[nd]); else (*mp[nd])[pref[nd]] = lvl[nd]; // cout << nd << '\n'; // for (auto &j: (*mp[nd])) { // cout << j.ff << ' ' << j.ss << '\n'; // } } int best_path(int N, int K, int H[][2], int L[]) { vector<vector<pii>> adj(N); for (int i = 0; i < N; i++) { adj[H[i][0]].pb({H[i][1], L[i]}); adj[H[i][1]].pb({H[i][0], L[i]}); } vector<int> sz(N, 0), lvl(N, 0), nodes; vector<pii> sf(N); vector<ll> pref(N); vector<map<ll, int>*> mp(N); int ans = mod; calcsz(0, 0, 0, adj, sz, lvl, pref, nodes, sf); dfs(K, 0, 0, adj, sz, lvl, pref, nodes, sf, mp, ans); if (ans == mod) return -1; return ans; }

Compilation message (stderr)

race.cpp:1:54: error: 'pii' was not declared in this scope
    1 | void calcsz(int nd, int p, int weight, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf) {
      |                                                      ^~~
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:47: error: 'vector' was not declared in this scope
    1 | void calcsz(int nd, int p, int weight, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf) {
      |                                               ^~~~~~
race.cpp:1:54: error: 'pii' was not declared in this scope
    1 | void calcsz(int nd, int p, int weight, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf) {
      |                                                      ^~~
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:47: error: 'vector' was not declared in this scope
    1 | void calcsz(int nd, int p, int weight, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf) {
      |                                               ^~~~~~
race.cpp:1:54: error: 'pii' was not declared in this scope
    1 | void calcsz(int nd, int p, int weight, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf) {
      |                                                      ^~~
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:47: error: 'vector' was not declared in this scope
    1 | void calcsz(int nd, int p, int weight, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf) {
      |                                               ^~~~~~
race.cpp:1:54: error: 'pii' was not declared in this scope
    1 | void calcsz(int nd, int p, int weight, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf) {
      |                                                      ^~~
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:54: error: 'pii' was not declared in this scope
race.cpp:1:47: error: 'vector' was not declared in this scope
    1 | void calcsz(int nd, int p, int weight, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf) {
      |                                               ^~~~~~
race.cpp:1:54: error: 'pii' was not declared in this scope
    1 | void calcsz(int nd, int p, int weight, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf) {
      |                                                      ^~~
race.cpp:1:40: error: 'vector' has not been declared
    1 | void calcsz(int nd, int p, int weight, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf) {
      |                                        ^~~~~~
race.cpp:1:46: error: expected ',' or '...' before '<' token
    1 | void calcsz(int nd, int p, int weight, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf) {
      |                                              ^
race.cpp: In function 'void calcsz(int, int, int, int)':
race.cpp:2:5: error: 'lvl' was not declared in this scope
    2 |     lvl[nd] = lvl[p] + 1;
      |     ^~~
race.cpp:3:5: error: 'sz' was not declared in this scope
    3 |     sz[nd] = 1;
      |     ^~
race.cpp:4:5: error: 'pref' was not declared in this scope
    4 |     pref[nd] = pref[p] + weight;
      |     ^~~~
race.cpp:5:5: error: 'sf' was not declared in this scope
    5 |     sf[nd].ff = nodes.size();
      |     ^~
race.cpp:5:17: error: 'nodes' was not declared in this scope
    5 |     sf[nd].ff = nodes.size();
      |                 ^~~~~
race.cpp:7:10: error: 'pii' was not declared in this scope
    7 |     for (pii &v: adj[nd]) {
      |          ^~~
race.cpp:7:16: error: found ':' in nested-name-specifier, expected '::'
    7 |     for (pii &v: adj[nd]) {
      |                ^
      |                ::
race.cpp:7:15: error: 'v' has not been declared
    7 |     for (pii &v: adj[nd]) {
      |               ^
race.cpp:14:1: error: expected primary-expression before '}' token
   14 | }
      | ^
race.cpp:13:30: error: expected ')' before '}' token
   13 |     sf[nd].ss = nodes.size();
      |                              ^
      |                              )
   14 | }
      | ~                             
race.cpp:7:9: note: to match this '('
    7 |     for (pii &v: adj[nd]) {
      |         ^
race.cpp:14:1: error: expected primary-expression before '}' token
   14 | }
      | ^
race.cpp: At global scope:
race.cpp:16:46: error: 'pii' was not declared in this scope
   16 | void dfs(int k, int nd, int p, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf, vector<map<ll, int>*> &mp, int &ans) {
      |                                              ^~~
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:39: error: 'vector' was not declared in this scope
   16 | void dfs(int k, int nd, int p, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf, vector<map<ll, int>*> &mp, int &ans) {
      |                                       ^~~~~~
race.cpp:16:46: error: 'pii' was not declared in this scope
   16 | void dfs(int k, int nd, int p, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf, vector<map<ll, int>*> &mp, int &ans) {
      |                                              ^~~
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:39: error: 'vector' was not declared in this scope
   16 | void dfs(int k, int nd, int p, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf, vector<map<ll, int>*> &mp, int &ans) {
      |                                       ^~~~~~
race.cpp:16:46: error: 'pii' was not declared in this scope
   16 | void dfs(int k, int nd, int p, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf, vector<map<ll, int>*> &mp, int &ans) {
      |                                              ^~~
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:39: error: 'vector' was not declared in this scope
   16 | void dfs(int k, int nd, int p, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf, vector<map<ll, int>*> &mp, int &ans) {
      |                                       ^~~~~~
race.cpp:16:46: error: 'pii' was not declared in this scope
   16 | void dfs(int k, int nd, int p, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf, vector<map<ll, int>*> &mp, int &ans) {
      |                                              ^~~
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:46: error: 'pii' was not declared in this scope
race.cpp:16:39: error: 'vector' was not declared in this scope
   16 | void dfs(int k, int nd, int p, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf, vector<map<ll, int>*> &mp, int &ans) {
      |                                       ^~~~~~
race.cpp:16:46: error: 'pii' was not declared in this scope
   16 | void dfs(int k, int nd, int p, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf, vector<map<ll, int>*> &mp, int &ans) {
      |                                              ^~~
race.cpp:16:32: error: 'vector' has not been declared
   16 | void dfs(int k, int nd, int p, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf, vector<map<ll, int>*> &mp, int &ans) {
      |                                ^~~~~~
race.cpp:16:38: error: expected ',' or '...' before '<' token
   16 | void dfs(int k, int nd, int p, vector<vector<pii>> &adj, vector<int> &sz, vector<int> &lvl, vector<ll> &pref, vector<int> &nodes, vector<pii> &sf, vector<map<ll, int>*> &mp, int &ans) {
      |                                      ^
race.cpp: In function 'void dfs(int, int, int, int)':
race.cpp:18:10: error: 'pii' was not declared in this scope
   18 |     for (pii &v: adj[nd]) {
      |          ^~~
race.cpp:18:16: error: found ':' in nested-name-specifier, expected '::'
   18 |     for (pii &v: adj[nd]) {
      |                ^
      |                ::
race.cpp:18:15: error: 'v' has not been declared
   18 |     for (pii &v: adj[nd]) {
      |               ^
race.cpp:25:5: error: expected primary-expression before 'if'
   25 |     if (big_child != -1) {
      |     ^~
race.cpp:23:6: error: expected ';' before 'if'
   23 |     }
      |      ^
      |      ;
   24 | 
   25 |     if (big_child != -1) {
      |     ~~
race.cpp:25:5: error: expected primary-expression before 'if'
   25 |     if (big_child != -1) {
      |     ^~
race.cpp:23:6: error: expected ')' before 'if'
   23 |     }
      |      ^
      |      )
   24 | 
   25 |     if (big_child != -1) {
      |     ~~
race.cpp:18:9: note: to match this '('
   18 |     for (pii &v: adj[nd]) {
      |         ^
race.cpp:26:9: error: 'mp' was not declared in this scope; did you mean 'p'?
   26 |         mp[nd] = mp[big_child];
      |         ^~
      |         p
race.cpp:28:9: error: 'mp' was not declared in this scope; did you mean 'p'?
   28 |         mp[nd] = new map<ll, int>();
      |         ^~
      |         p
race.cpp:28:26: error: 'll' was not declared in this scope
   28 |         mp[nd] = new map<ll, int>();
      |                          ^~
race.cpp:28:22: error: expected type-specifier
   28 |         mp[nd] = new map<ll, int>();
      |                      ^~~~~~~~~~~~
race.cpp:31:10: error: 'pii' was not declared in this scope
   31 |     for (pii &v: adj[nd]) {
      |          ^~~
race.cpp:31:16: error: found ':' in nested-name-specifier, expected '::'
   31 |     for (pii &v: adj[nd]) {
      |                ^
      |                ::
race.cpp:31:15: error: 'v' has not been declared
   31 |     for (pii &v: adj[nd]) {
      |               ^
race.cpp:50:5: error: expected primary-expression before 'if'
   50 |     if (mp[nd]->find(k + pref[nd]) != mp[nd]->end())
      |     ^~
race.cpp:48:6: error: expected ';' before 'if'
   48 |     }
      |      ^
      |      ;
   49 | 
   50 |     if (mp[nd]->find(k + pref[nd]) != mp[nd]->end())
      |     ~~
race.cpp:50:5: error: expected primary-expression before 'if'
   50 |     if (mp[nd]->find(k + pref[nd]) != mp[nd]->end())
      |     ^~
race.cpp:48:6: error: expected ')' before 'if'
   48 |     }
      |      ^
      |      )
   49 | 
   50 |     if (mp[nd]->find(k + pref[nd]) != mp[nd]->end())
      |     ~~
race.cpp:31:9: note: to match this '('
   31 |     for (pii &v: adj[nd]) {
      |         ^
race.cpp:50:9: error: 'mp' was not declared in this scope; did you mean 'p'?
   50 |     if (mp[nd]->find(k + pref[nd]) != mp[nd]->end())
      |         ^~
      |         p
race.cpp:50:26: error: 'pref' was not declared in this scope
   50 |     if (mp[nd]->find(k + pref[nd]) != mp[nd]->end())
      |                          ^~~~
race.cpp:51:9: error: 'ans' was not declared in this scope
   51 |         ans = min(ans, (*mp[nd])[k + pref[nd]] - lvl[nd]);
      |         ^~~
race.cpp:51:50: error: 'lvl' was not declared in this scope
   51 |         ans = min(ans, (*mp[nd])[k + pref[nd]] - lvl[nd]);
      |                                                  ^~~
race.cpp:51:15: error: 'min' was not declared in this scope
   51 |         ans = min(ans, (*mp[nd])[k + pref[nd]] - lvl[nd]);
      |               ^~~
race.cpp:53:9: error: 'mp' was not declared in this scope; did you mean 'p'?
   53 |     if (mp[nd]->find(pref[nd]) != mp[nd]->end()) (*mp[nd])[pref[nd]] = min((*mp[nd])[pref[nd]], lvl[nd]);
      |         ^~
      |         p
race.cpp:53:22: error: 'pref' was not declared in this scope
   53 |     if (mp[nd]->find(pref[nd]) != mp[nd]->end()) (*mp[nd])[pref[nd]] = min((*mp[nd])[pref[nd]], lvl[nd]);
      |                      ^~~~
race.cpp:53:97: error: 'lvl' was not declared in this scope
   53 |     if (mp[nd]->find(pref[nd]) != mp[nd]->end()) (*mp[nd])[pref[nd]] = min((*mp[nd])[pref[nd]], lvl[nd]);
      |                                                                                                 ^~~
race.cpp:53:72: error: 'min' was not declared in this scope
   53 |     if (mp[nd]->find(pref[nd]) != mp[nd]->end()) (*mp[nd])[pref[nd]] = min((*mp[nd])[pref[nd]], lvl[nd]);
      |                                                                        ^~~
race.cpp:54:32: error: 'lvl' was not declared in this scope
   54 |     else (*mp[nd])[pref[nd]] = lvl[nd];
      |                                ^~~
race.cpp: In function 'int best_path(int, int, int (*)[2], int*)':
race.cpp:65:19: error: 'pii' was not declared in this scope
   65 |     vector<vector<pii>> adj(N);
      |                   ^~~
race.cpp:65:12: error: 'vector' was not declared in this scope
   65 |     vector<vector<pii>> adj(N);
      |            ^~~~~~
race.cpp:65:25: error: 'adj' was not declared in this scope
   65 |     vector<vector<pii>> adj(N);
      |                         ^~~
race.cpp:71:12: error: expected primary-expression before 'int'
   71 |     vector<int> sz(N, 0), lvl(N, 0), nodes;
      |            ^~~
race.cpp:72:17: error: 'sf' was not declared in this scope
   72 |     vector<pii> sf(N);
      |                 ^~
race.cpp:73:12: error: 'll' was not declared in this scope
   73 |     vector<ll> pref(N);
      |            ^~
race.cpp:73:16: error: 'pref' was not declared in this scope
   73 |     vector<ll> pref(N);
      |                ^~~~
race.cpp:74:12: error: 'map' was not declared in this scope
   74 |     vector<map<ll, int>*> mp(N);
      |            ^~~
race.cpp:74:20: error: expected primary-expression before 'int'
   74 |     vector<map<ll, int>*> mp(N);
      |                    ^~~
race.cpp:75:15: error: 'mod' was not declared in this scope
   75 |     int ans = mod;
      |               ^~~
race.cpp:76:26: error: 'sz' was not declared in this scope
   76 |     calcsz(0, 0, 0, adj, sz, lvl, pref, nodes, sf);
      |                          ^~
race.cpp:76:30: error: 'lvl' was not declared in this scope
   76 |     calcsz(0, 0, 0, adj, sz, lvl, pref, nodes, sf);
      |                              ^~~
race.cpp:76:41: error: 'nodes' was not declared in this scope
   76 |     calcsz(0, 0, 0, adj, sz, lvl, pref, nodes, sf);
      |                                         ^~~~~
race.cpp:77:49: error: 'mp' was not declared in this scope
   77 |     dfs(K, 0, 0, adj, sz, lvl, pref, nodes, sf, mp, ans);
      |                                                 ^~