結果

問題 No.330 Eigenvalue Decomposition
ユーザー LayCurseLayCurse
提出日時 2015-12-23 11:19:16
言語 C++11
(gcc 11.4.0)
結果
AC  
実行時間 57 ms / 5,000 ms
コード長 3,173 bytes
コンパイル時間 1,359 ms
コンパイル使用メモリ 160,260 KB
実行使用メモリ 6,272 KB
最終ジャッジ日時 2024-09-18 19:27:28
合計ジャッジ時間 2,855 ms
ジャッジサーバーID
(参考情報)
judge1 / judge3
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 25 ms
5,376 KB
testcase_01 AC 2 ms
5,376 KB
testcase_02 AC 2 ms
5,376 KB
testcase_03 AC 26 ms
5,376 KB
testcase_04 AC 1 ms
5,376 KB
testcase_05 AC 2 ms
5,376 KB
testcase_06 AC 27 ms
5,376 KB
testcase_07 AC 2 ms
5,376 KB
testcase_08 AC 18 ms
5,376 KB
testcase_09 AC 48 ms
6,016 KB
testcase_10 AC 2 ms
5,376 KB
testcase_11 AC 16 ms
5,376 KB
testcase_12 AC 53 ms
6,272 KB
testcase_13 AC 2 ms
5,376 KB
testcase_14 AC 15 ms
5,376 KB
testcase_15 AC 3 ms
5,376 KB
testcase_16 AC 1 ms
5,376 KB
testcase_17 AC 3 ms
5,376 KB
testcase_18 AC 10 ms
5,376 KB
testcase_19 AC 2 ms
5,376 KB
testcase_20 AC 3 ms
5,376 KB
testcase_21 AC 57 ms
6,272 KB
testcase_22 AC 2 ms
5,376 KB
testcase_23 AC 4 ms
5,376 KB
testcase_24 AC 48 ms
5,760 KB
testcase_25 AC 1 ms
5,376 KB
testcase_26 AC 3 ms
5,376 KB
testcase_27 AC 2 ms
5,376 KB
testcase_28 AC 1 ms
5,376 KB
testcase_29 AC 2 ms
5,376 KB
testcase_30 AC 2 ms
5,376 KB
testcase_31 AC 1 ms
5,376 KB
testcase_32 AC 2 ms
5,376 KB
testcase_33 AC 2 ms
5,376 KB
testcase_34 AC 1 ms
5,376 KB
testcase_35 AC 1 ms
5,376 KB
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.cpp: In function ‘void reader(double*)’:
main.cpp:17:29: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   17 | void reader(double *x){scanf("%lf",x);}
      |                        ~~~~~^~~~~~~~~
main.cpp: In function ‘int main()’:
main.cpp:59:8: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   59 |   scanf("%d%d",&N,&M);
      |   ~~~~~^~~~~~~~~~~~~~
main.cpp:60:17: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   60 |   rep(i,M) scanf("%d%d%d",A+i,B+i,C+i);
      |            ~~~~~^~~~~~~~~~~~~~~~~~~~~~

ソースコード

diff #

// ĂƂイ[

#include<bits/stdc++.h>
using namespace std;

#define REP(i,a,b) for(i=a;i<b;i++)
#define rep(i,n) REP(i,0,n)

#define mygc(c) (c)=getchar_unlocked()
#define mypc(c) putchar_unlocked(c)

#define ll long long
#define ull unsigned ll

void reader(int *x){int k,m=0;*x=0;for(;;){mygc(k);if(k=='-'){m=1;break;}if('0'<=k&&k<='9'){*x=k-'0';break;}}for(;;){mygc(k);if(k<'0'||k>'9')break;*x=(*x)*10+k-'0';}if(m)(*x)=-(*x);}
void reader(ll *x){int k,m=0;*x=0;for(;;){mygc(k);if(k=='-'){m=1;break;}if('0'<=k&&k<='9'){*x=k-'0';break;}}for(;;){mygc(k);if(k<'0'||k>'9')break;*x=(*x)*10+k-'0';}if(m)(*x)=-(*x);}
void reader(double *x){scanf("%lf",x);}
int reader(char c[]){int i,s=0;for(;;){mygc(i);if(i!=' '&&i!='\n'&&i!='\r'&&i!='\t'&&i!=EOF) break;}c[s++]=i;for(;;){mygc(i);if(i==' '||i=='\n'||i=='\r'||i=='\t'||i==EOF) break;c[s++]=i;}c[s]='\0';return s;}
template <class T, class S> void reader(T *x, S *y){reader(x);reader(y);}
template <class T, class S, class U> void reader(T *x, S *y, U *z){reader(x);reader(y);reader(z);}
template <class T, class S, class U, class V> void reader(T *x, S *y, U *z, V *w){reader(x);reader(y);reader(z);reader(w);}

void writer(int x, char c){int s=0,m=0;char f[10];if(x<0)m=1,x=-x;while(x)f[s++]=x%10,x/=10;if(!s)f[s++]=0;if(m)mypc('-');while(s--)mypc(f[s]+'0');mypc(c);}
void writer(ll x, char c){int s=0,m=0;char f[20];if(x<0)m=1,x=-x;while(x)f[s++]=x%10,x/=10;if(!s)f[s++]=0;if(m)mypc('-');while(s--)mypc(f[s]+'0');mypc(c);}
void writer(double x, char c){printf("%.15f",x);mypc(c);}
void writer(const char c[]){int i;for(i=0;c[i]!='\0';i++)mypc(c[i]);}
void writer(const char x[], char c){int i;for(i=0;x[i]!='\0';i++)mypc(x[i]);mypc(c);}
template<class T> void writerLn(T x){writer(x,'\n');}
template<class T, class S> void writerLn(T x, S y){writer(x,' ');writer(y,'\n');}
template<class T, class S, class U> void writerLn(T x, S y, U z){writer(x,' ');writer(y,' ');writer(z,'\n');}
template<class T> void writerArr(T x[], int n){int i;if(!n){mypc('\n');return;}rep(i,n-1)writer(x[i],' ');writer(x[n-1],'\n');}

char memarr[17000000]; void *mem = memarr;
#define MD 1000000007

struct unionFind{
  int *d, N, M;
  inline void malloc(int n){d=(int*)std::malloc(n*sizeof(int));M=n;}
  inline void *malloc(int n, void *mem){d=(int*)mem;M=n;return d+n;}
  inline void init(int n){int i;N=n;rep(i,n)d[i]=-1;}
  inline void init(void){init(M);}
  inline int get(int a){int t=a,k;while(d[t]>=0)t=d[t];while(d[a]>=0)k=d[a],d[a]=t,a=k;return a;}
  inline int connect(int a, int b){if(d[a]>=0)a=get(a);if(d[b]>=0)b=get(b);if(a==b)return 0;if(d[a]<d[b])d[a]+=d[b],d[b]=a;else d[b]+=d[a],d[a]=b;return 1;}
  inline int operator()(int a){return get(a);}
  inline int operator()(int a, int b){return connect(a,b);}
  inline int& operator[](int a){return d[a];}
  inline int sizeList(int res[]){int i,s=0;rep(i,N)if(d[i]<0)res[s++]=-d[i];return s;}
};


int N, M;
int A[300000], B[300000], C[300000];

int main(){
  int i, j, k;
  int res;
  unionFind uf;

  scanf("%d%d",&N,&M);
  rep(i,M) scanf("%d%d%d",A+i,B+i,C+i);

  uf.malloc(N+10);
  uf.init(N+10);

  res = N;
  rep(i,M) res -= uf(A[i],B[i]);

  writerLn(res);

  return 0;
}
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