Submission #414930

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
414930	2021-05-31 10:44:19	Pro_ktmr	Port Facility (JOI17_port_facility)	C++17	100 / 100	3216 ms	243412 KiB

port_facility

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#pragma GCC target ("avx2")
#pragma GCC optimize ("unroll-loops")
#pragma GCC optimize ("O3")
#include "bits/stdc++.h"
#include <unordered_set>
#include <unordered_map>
#include <random>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
constexpr ll MOD = 1'000'000'007LL; /*998'244'353LL;*/
#define pb push_back
#define mp make_pair
#define all(x) (x).begin(), (x).end()
#define rep(i, n) for(int (i)=0; (i)<(n); (i)++)
template<class T> bool chmax(T &a, const T &b){ if(a<b){ a=b; return 1; } return 0; }
template<class T> bool chmin(T &a, const T &b){ if(b<a){ a=b; return 1; } return 0; }
constexpr int dy[4]={-1,0,1,0};
constexpr int dx[4]={0,-1,0,1};
struct UnionFind{
private:
    vector<int> par;
    vector<set<int>> fac;
public:
    void init(int N, vector<int> v){
        par.resize(N);
        fac.resize(N);
        for(int i=0; i<N; i++) par[i] = i;
        for(int i=0; i<N; i++) fac[i].insert(v[i]);
 
 
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Compilation message (stderr)

port_facility.cpp: In function 'int main()':
port_facility.cpp:15:27: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   15 | #define rep(i, n) for(int (i)=0; (i)<(n); (i)++)
      |                           ^
port_facility.cpp:215:2: note: in expansion of macro 'rep'
  215 |  rep(i, N){
      |  ^~~
port_facility.cpp:15:27: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   15 | #define rep(i, n) for(int (i)=0; (i)<(n); (i)++)
      |                           ^
port_facility.cpp:225:2: note: in expansion of macro 'rep'
  225 |  rep(i, 2*N){
      |  ^~~
port_facility.cpp:15:27: warning: unnecessary parentheses in declaration of 'k' [-Wparentheses]
   15 | #define rep(i, n) for(int (i)=0; (i)<(n); (i)++)
      |                           ^
port_facility.cpp:250:5: note: in expansion of macro 'rep'
  250 |     rep(k, N){
      |     ^~~
port_facility.cpp:15:27: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   15 | #define rep(i, n) for(int (i)=0; (i)<(n); (i)++)
      |                           ^
port_facility.cpp:284:5: note: in expansion of macro 'rep'
  284 |     rep(i, N) (ans *= (uf.root(i) == i ? 2 : 1)) %= MOD;
      |     ^~~
port_facility.cpp:213:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  213 |  scanf("%d", &N);
      |  ~~~~~^~~~~~~~~~
port_facility.cpp:216:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  216 |   scanf("%d%d", &A[i], &B[i]);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 12 / 12
• Subtask 3: 56 / 56
• Subtask 4: 22 / 22