oj.uz

Submission #300917

# Submission time Handle Problem Language Result Execution time Memory
300917 2020-09-17T15:05:35 Z Theo830 Connecting Supertrees (IOI20_supertrees) C++14
100 / 100
 291 ms 30332 KB 
#include <bits/stdc++.h>
#include "supertrees.h"
using namespace std;
typedef int ll;
ll INF = 1e9+7;
ll MOD = 998244353;
typedef pair<long long,ll> ii;
#define iii pair<ii,ll>
#define f(i,a,b) for(ll i = a;i < b;i++)
#define rf(i,a,b) for(long long i=a;i>=b;i--)
#define fastio ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define w(t) while(t--)
#define c(n); cin>>n;
#define p(n) cout<<n;
#define pl(n) cout<<n<<"\n";
#define ps(n); cout<<n<<" ";
#define F first
#define S second
#define pb(a) push_back(a)
#define all(x) (x).begin(), (x).end()
#define ull unsigned long long
#define vll vector<ll>
#define vii vector<ii>
#define mkp make_pair
#define ld long double
#define arrin(a,n) f(i,0,n){cin>>a[i];}
#define arrout(a,n) f(i,0,n){cout<<a[i]<<" ";}
#define printclock cerr<<"Time : "<<*(ld)clock()/(ld)CLOCKS_PER_SEC<<"ms\n";
#define PI (2*acos(0))
#define EPS 1e-18
const long long N = 2e5+5;
const long long M = 1e6+5;
vll visit,dist,taken;
vector<vll> adj,ad;
vector<vii> adj2;
priority_queue<ii,vector<ii>, greater<ii> > pq;
ll bit[N]={0};
ll par[N]={0};
ll an[N][35];
ll depth[N]={0};
ll siz;
ll res = 0;
ll mycbrt(ll num){ll l = 1,r = 1000000;ll ans = 0;while(l <= r){ll mid = (l+r)/2;if(mid * mid * mid <= num){l = mid + 1;ans = max(ans,mid);}else{r = mid - 1;}}return ans;}
ll lcm(ll a,ll b){return (a * b) / __gcd(a,b);}
ll gcd(ll a,ll b){return __gcd(a,b);}
ll power(ll a,ll b,ll MOD){if(b == 0)return 1;if(b == 1)return a;ll ans = power(a,b/2,MOD) % MOD;ans *= ans;ans %= MOD;if(b % 2 == 1)ans *= a;return ans%MOD;}
ll inverse(ll x){x%=MOD;return power(x,MOD-2,MOD);}
void BITup(ll k, ll x){while(k <= siz){bit[k]+=x;k += k & -k;}}
ll BITq(ll k){ll s=0;while(k>=1){s+=bit[k];k -= k &-k;}return s;}
struct point{ll x,y,idx;};
void dfs(ll v){visit[v] = 1;for(auto x:ad[v]){if(!visit[x]){depth[x] = depth[v] + 1;dfs(x);}}}
void bfs(ll s){visit[s] = 1;queue<ll>q;q.push(s);while(!q.empty()){ll u = q.front();ps(u);q.pop();for(auto x:adj[u]){if(!visit[x]){visit[x] = 1;q.push(x);}}}}
void dijkstra(ll s){pq.push(ii(0,s));dist[s] = 0;while(!pq.empty()){ii f = pq.top();pq.pop();ll w = f.F;ll u = f.S;if(w > dist[u]){continue;}for(auto v:adj2[u]){if(dist[u] + v.S < dist[v.F]){dist[v.F] = dist[u] + v.S;pq.push(ii(dist[v.F],v.F));}}}}
void prim(ll edge) {taken[edge] = 1;for(auto v:adj2[edge]) {if (taken[v.first]==0)pq.push(ii(v.second, v.first));}}
ll mst(ll s){taken.assign(N, 0);prim(s);ll cost = 0;while(!pq.empty()){ii front = pq.top();pq.pop();ll w = front.first;ll u = front.second;if(taken[u]==0)cost += w;prim(u);}return cost;}
void bfs01(ll s){deque<ll>q;dist[s] = 0;q.push_back(s);while(!q.empty()){ll v = q.front();q.pop_front();for(auto x:adj2[v]){if(dist[x.F] > dist[v] + x.S){dist[x.F] = dist[v] + x.S;if(x.S == 0){q.push_front(x.F);}else{q.push_back(x.F);}}}}}
void build(ll s,ll p){an[s][0] = p;f(i,1,35){an[s][i] = an[an[s][i-1]][i-1];}for(auto x:adj[s]){if(x != p){depth[x] = depth[s] + 1;build(x,s);}}}
ll kth(ll x,ll k){ll ans = x;if(depth[x] < k){return -1;}ll pos = 0;while(k > 0){if(k % 2){ans = an[ans][pos];}pos++;k /= 2;}return ans;}
ll lca(ll a,ll b){if(depth[a] > depth[b]){swap(a,b);}b = kth(b,abs(depth[a] - depth[b]));if(a == b){return a;}for(ll i = 34;i >= 0;i--){if(an[a][i] == an[b][i]){continue;}a = an[a][i];b = an[b][i];}return an[a][0];}
ll find_dsu(ll x){if(par[x] == x){return x;}par[x] = find_dsu(par[x]);return par[x];}
void union_dsu(ll x,ll y){ll pos1 = find_dsu(x);ll pos2 = find_dsu(y);par[pos2] = pos1;}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
uniform_int_distribution<ll> distr;
ll rnd(ll a, ll b){return distr(rng)%(b-a+1)+a;}
void YESNO(ll a){if(!!a){pl("YES");}else{pl("NO");}}
void filesin(void){freopen("input.out","r",stdin);}
void filesout(void){freopen("tracing.out","w",stdout);}
///I hope I will get uprating and don't make mistakes
///I will never stop programming
///sqrt(-1) Love C++
///Please don't hack me
///@TheofanisOrfanou Theo830
///Training
set<ll>ev;
bool ok = 1;
ll comp[1005] = {0};
void solve(ll idx,ll s){
    ev.insert(idx);
    comp[idx] = s;
    for(auto x:adj[idx]){
        if(!ev.count(x)){
            solve(x,s);
        }
    }
}
vll exo;
void solvi(ll s){
    visit[s] = 1;
    exo.pb(s);
    for(auto x:ad[s]){
        if(!visit[x]){
            solvi(x);
        }
    }
}
int construct(vector<vector<int>> p) {
	int n = p.size();
	vector<vector<int>> answer;
	for(int i = 0; i < n; i++) {
		vector<int> row;
		row.assign(n,0);
		answer.push_back(row);
	}
	adj.assign(n,vll());
	ad.assign(n,vll());
	f(i,0,n){
        f(j,0,n){
            if(p[i][j] >= 1){
                adj[i].pb(j);
            }
            if(p[i][j] == 1){
                ad[i].pb(j);
            }
            if(p[i][j] == 3){
                return 0;
            }
        }
	}
	ll c = 1;
	f(i,0,n){
        if(!ev.count(i)){
            solve(i,c);
            c++;
        }
	}
	f(i,0,n){
        f(j,0,n){
            if(p[i][j] == 0 && comp[i] == comp[j]){
                ok = 0;
            }
        }
	}
	if(ok){
        f(com,1,c){
            vll nodes,n2;
            f(i,0,n){
                if(comp[i] == com){
                    nodes.pb(i);
                }
            }
            visit.assign(n,0);
            for(auto x:nodes){
                if(!visit[x]){
                    exo.clear();
                    n2.pb(x);
                    solvi(x);
                    f(j,0,exo.size()-1){
                        ll pos = j+1;
                        answer[exo[j]][exo[pos]] = answer[exo[pos]][exo[j]] = 1;
                    }
                }
            }
            if(n2.size() == 2){
                ok = 0;
                return 0;
            }
            if(n2.size() != 1){
                f(i,0,n2.size()){
                    ll pos = n2[i],pos2 = n2[(i+1)%(n2.size())];
                    answer[pos][pos2] = answer[pos2][pos] = 1;
                }
            }
        }
	}
	if(ok == 0){
        return 0;
	}
	build(answer);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:9:33: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 | #define f(i,a,b) for(ll i = a;i < b;i++)
......
  147 |                     f(j,0,exo.size()-1){
      |                       ~~~~~~~~~~~~~~~~
supertrees.cpp:147:21: note: in expansion of macro 'f'
  147 |                     f(j,0,exo.size()-1){
      |                     ^
supertrees.cpp:9:33: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 | #define f(i,a,b) for(ll i = a;i < b;i++)
......
  158 |                 f(i,0,n2.size()){
      |                   ~~~~~~~~~~~~~  
supertrees.cpp:158:17: note: in expansion of macro 'f'
  158 |                 f(i,0,n2.size()){
      |                 ^
supertrees.cpp: In function 'void filesin()':
supertrees.cpp:66:27: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   66 | void filesin(void){freopen("input.out","r",stdin);}
      |                    ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
supertrees.cpp: In function 'void filesout()':
supertrees.cpp:67:28: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   67 | void filesout(void){freopen("tracing.out","w",stdout);}
      |                     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 12 ms 1664 KB Output is correct
7 Correct 291 ms 30332 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 12 ms 1664 KB Output is correct
7 Correct 291 ms 30332 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 10 ms 1280 KB Output is correct
13 Correct 267 ms 22264 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 7 ms 1024 KB Output is correct
17 Correct 164 ms 17272 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 63 ms 6008 KB Output is correct
21 Correct 257 ms 23320 KB Output is correct
22 Correct 248 ms 22248 KB Output is correct
23 Correct 264 ms 26232 KB Output is correct
24 Correct 246 ms 22392 KB Output is correct
25 Correct 121 ms 13304 KB Output is correct
26 Correct 119 ms 12280 KB Output is correct
27 Correct 274 ms 28264 KB Output is correct
28 Correct 249 ms 22264 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 10 ms 1280 KB Output is correct
9 Correct 248 ms 22392 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 12 ms 1408 KB Output is correct
13 Correct 275 ms 26360 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 7 ms 896 KB Output is correct
17 Correct 158 ms 14824 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 0 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 62 ms 5880 KB Output is correct
22 Correct 248 ms 22776 KB Output is correct
23 Correct 243 ms 22268 KB Output is correct
24 Correct 261 ms 25340 KB Output is correct
25 Correct 115 ms 12280 KB Output is correct
26 Correct 123 ms 12792 KB Output is correct
27 Correct 241 ms 22248 KB Output is correct
28 Correct 264 ms 24312 KB Output is correct
29 Correct 114 ms 12324 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 66 ms 5984 KB Output is correct
5 Correct 249 ms 23288 KB Output is correct
6 Correct 242 ms 22268 KB Output is correct
7 Correct 268 ms 26232 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 63 ms 5880 KB Output is correct
10 Correct 268 ms 22776 KB Output is correct
11 Correct 246 ms 22264 KB Output is correct
12 Correct 262 ms 25324 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 63 ms 5880 KB Output is correct
17 Correct 266 ms 22776 KB Output is correct
18 Correct 259 ms 22776 KB Output is correct
19 Correct 247 ms 22520 KB Output is correct
20 Correct 245 ms 22264 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 12 ms 1664 KB Output is correct
7 Correct 291 ms 30332 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 10 ms 1280 KB Output is correct
13 Correct 267 ms 22264 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 7 ms 1024 KB Output is correct
17 Correct 164 ms 17272 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 63 ms 6008 KB Output is correct
21 Correct 257 ms 23320 KB Output is correct
22 Correct 248 ms 22248 KB Output is correct
23 Correct 264 ms 26232 KB Output is correct
24 Correct 246 ms 22392 KB Output is correct
25 Correct 121 ms 13304 KB Output is correct
26 Correct 119 ms 12280 KB Output is correct
27 Correct 274 ms 28264 KB Output is correct
28 Correct 249 ms 22264 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 0 ms 384 KB Output is correct
31 Correct 0 ms 384 KB Output is correct
32 Correct 0 ms 384 KB Output is correct
33 Correct 0 ms 384 KB Output is correct
34 Correct 1 ms 384 KB Output is correct
35 Correct 0 ms 384 KB Output is correct
36 Correct 10 ms 1280 KB Output is correct
37 Correct 248 ms 22392 KB Output is correct
38 Correct 0 ms 384 KB Output is correct
39 Correct 0 ms 384 KB Output is correct
40 Correct 12 ms 1408 KB Output is correct
41 Correct 275 ms 26360 KB Output is correct
42 Correct 0 ms 384 KB Output is correct
43 Correct 0 ms 384 KB Output is correct
44 Correct 7 ms 896 KB Output is correct
45 Correct 158 ms 14824 KB Output is correct
46 Correct 1 ms 384 KB Output is correct
47 Correct 0 ms 384 KB Output is correct
48 Correct 1 ms 384 KB Output is correct
49 Correct 62 ms 5880 KB Output is correct
50 Correct 248 ms 22776 KB Output is correct
51 Correct 243 ms 22268 KB Output is correct
52 Correct 261 ms 25340 KB Output is correct
53 Correct 115 ms 12280 KB Output is correct
54 Correct 123 ms 12792 KB Output is correct
55 Correct 241 ms 22248 KB Output is correct
56 Correct 264 ms 24312 KB Output is correct
57 Correct 114 ms 12324 KB Output is correct
58 Correct 0 ms 384 KB Output is correct
59 Correct 1 ms 416 KB Output is correct
60 Correct 7 ms 1152 KB Output is correct
61 Correct 179 ms 18540 KB Output is correct
62 Correct 1 ms 384 KB Output is correct
63 Correct 0 ms 384 KB Output is correct
64 Correct 1 ms 384 KB Output is correct
65 Correct 63 ms 5884 KB Output is correct
66 Correct 118 ms 12920 KB Output is correct
67 Correct 118 ms 12792 KB Output is correct
68 Correct 115 ms 12536 KB Output is correct
69 Correct 114 ms 12392 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 12 ms 1664 KB Output is correct
7 Correct 291 ms 30332 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 10 ms 1280 KB Output is correct
13 Correct 267 ms 22264 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 7 ms 1024 KB Output is correct
17 Correct 164 ms 17272 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 63 ms 6008 KB Output is correct
21 Correct 257 ms 23320 KB Output is correct
22 Correct 248 ms 22248 KB Output is correct
23 Correct 264 ms 26232 KB Output is correct
24 Correct 246 ms 22392 KB Output is correct
25 Correct 121 ms 13304 KB Output is correct
26 Correct 119 ms 12280 KB Output is correct
27 Correct 274 ms 28264 KB Output is correct
28 Correct 249 ms 22264 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 0 ms 384 KB Output is correct
31 Correct 0 ms 384 KB Output is correct
32 Correct 0 ms 384 KB Output is correct
33 Correct 0 ms 384 KB Output is correct
34 Correct 1 ms 384 KB Output is correct
35 Correct 0 ms 384 KB Output is correct
36 Correct 10 ms 1280 KB Output is correct
37 Correct 248 ms 22392 KB Output is correct
38 Correct 0 ms 384 KB Output is correct
39 Correct 0 ms 384 KB Output is correct
40 Correct 12 ms 1408 KB Output is correct
41 Correct 275 ms 26360 KB Output is correct
42 Correct 0 ms 384 KB Output is correct
43 Correct 0 ms 384 KB Output is correct
44 Correct 7 ms 896 KB Output is correct
45 Correct 158 ms 14824 KB Output is correct
46 Correct 1 ms 384 KB Output is correct
47 Correct 0 ms 384 KB Output is correct
48 Correct 1 ms 384 KB Output is correct
49 Correct 62 ms 5880 KB Output is correct
50 Correct 248 ms 22776 KB Output is correct
51 Correct 243 ms 22268 KB Output is correct
52 Correct 261 ms 25340 KB Output is correct
53 Correct 115 ms 12280 KB Output is correct
54 Correct 123 ms 12792 KB Output is correct
55 Correct 241 ms 22248 KB Output is correct
56 Correct 264 ms 24312 KB Output is correct
57 Correct 114 ms 12324 KB Output is correct
58 Correct 1 ms 384 KB Output is correct
59 Correct 1 ms 384 KB Output is correct
60 Correct 0 ms 384 KB Output is correct
61 Correct 66 ms 5984 KB Output is correct
62 Correct 249 ms 23288 KB Output is correct
63 Correct 242 ms 22268 KB Output is correct
64 Correct 268 ms 26232 KB Output is correct
65 Correct 1 ms 384 KB Output is correct
66 Correct 63 ms 5880 KB Output is correct
67 Correct 268 ms 22776 KB Output is correct
68 Correct 246 ms 22264 KB Output is correct
69 Correct 262 ms 25324 KB Output is correct
70 Correct 1 ms 384 KB Output is correct
71 Correct 1 ms 384 KB Output is correct
72 Correct 1 ms 384 KB Output is correct
73 Correct 63 ms 5880 KB Output is correct
74 Correct 266 ms 22776 KB Output is correct
75 Correct 259 ms 22776 KB Output is correct
76 Correct 247 ms 22520 KB Output is correct
77 Correct 245 ms 22264 KB Output is correct
78 Correct 0 ms 384 KB Output is correct
79 Correct 1 ms 416 KB Output is correct
80 Correct 7 ms 1152 KB Output is correct
81 Correct 179 ms 18540 KB Output is correct
82 Correct 1 ms 384 KB Output is correct
83 Correct 0 ms 384 KB Output is correct
84 Correct 1 ms 384 KB Output is correct
85 Correct 63 ms 5884 KB Output is correct
86 Correct 118 ms 12920 KB Output is correct
87 Correct 118 ms 12792 KB Output is correct
88 Correct 115 ms 12536 KB Output is correct
89 Correct 114 ms 12392 KB Output is correct
90 Correct 1 ms 384 KB Output is correct
91 Correct 1 ms 384 KB Output is correct
92 Correct 5 ms 768 KB Output is correct
93 Correct 112 ms 12280 KB Output is correct
94 Correct 1 ms 384 KB Output is correct
95 Correct 1 ms 384 KB Output is correct
96 Correct 0 ms 384 KB Output is correct
97 Correct 28 ms 3320 KB Output is correct
98 Correct 109 ms 12280 KB Output is correct
99 Correct 112 ms 12280 KB Output is correct
100 Correct 110 ms 12280 KB Output is correct
101 Correct 112 ms 12284 KB Output is correct
102 Correct 116 ms 12280 KB Output is correct
103 Correct 112 ms 12280 KB Output is correct
104 Correct 111 ms 12280 KB Output is correct
105 Correct 117 ms 12260 KB Output is correct