結果

問題 No.1365 [Cherry 1st Tune] Whose Fault?
ユーザー 👑 Nachia
提出日時 2021-02-06 17:39:38
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 261 ms / 2,000 ms
コード長 394 bytes
コンパイル時間 1,886 ms
コンパイル使用メモリ 190,920 KB
最終ジャッジ日時 2025-01-18 13:38:30
ジャッジサーバーID
（参考情報） 		judge2 / judge1
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ファイルパターン 結果
other AC * 46
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コンパイルメッセージ
main.cpp: In function ‘int main()’:
main.cpp:2:18: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    2 | #define S(a)scanf("%d",&a);
      |             ~~~~~^~~~~~~~~
main.cpp:5:103: note: in expansion of macro ‘S’
    5 | int N,A[1<<17],V[1<<17],u,v;double P[1<<17],E=0;int Z(int a){return V[a]+1?V[a]=Z(V[a]):a;}int main(){S(N)R S(A[i])R{S(u)A[i]-=u;V[i]=-1;}R{S(u)P[i]=1./u;E+=f(i);}S(N)R{S(u)S(v)u=Z(u-1);v=Z(v-1);if(u^v){V[v]=u;E-=f(u)+f(v);A[u]+=A[v];P[u]+=P[v];E+=f(u);}printf("%f\n",E);}return 0;}
      |                                                                                                       ^
main.cpp:2:18: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    2 | #define S(a)scanf("%d",&a);
      |             ~~~~~^~~~~~~~~
main.cpp:5:109: note: in expansion of macro ‘S’
    5 | int N,A[1<<17],V[1<<17],u,v;double P[1<<17],E=0;int Z(int a){return V[a]+1?V[a]=Z(V[a]):a;}int main(){S(N)R S(A[i])R{S(u)A[i]-=u;V[i]=-1;}R{S(u)P[i]=1./u;E+=f(i);}S(N)R{S(u)S(v)u=Z(u-1);v=Z(v-1);if(u^v){V[v]=u;E-=f(u)+f(v);A[u]+=A[v];P[u]+=P[v];E+=f(u);}printf("%f\n",E);}return 0;}
      |                                                                                                             ^
main.cpp:2:18: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    2 | #define S(a)scanf("%d",&a);
      |             ~~~~~^~~~~~~~~
main.cpp:5:118: note: in expansion of macro ‘S’
    5 | int N,A[1<<17],V[1<<17],u,v;double P[1<<17],E=0;int Z(int a){return V[a]+1?V[a]=Z(V[a]):a;}int main(){S(N)R S(A[i])R{S(u)A[i]-=u;V[i]=-1;}R{S(u)P[i]=1./u;E+=f(i);}S(N)R{S(u)S(v)u=Z(u-1);v=Z(v-1);if(u^v){V[v]=u;E-=f(u)+f(v);A[u]+=A[v];P[u]+=P[v];E+=f(u);}printf("%f\n",E);}return 0;}
      |

ソースコード

diff # 

#include<bits/stdc++.h>
#define S(a)scanf("%d",&a);
#define R for(int i=0;i<(N);i++)
#define f(i)A[i]*A[i]/P[i]
int N,A[1<<17],V[1<<17],u,v;double P[1<<17],E=0;int Z(int a){return V[a]+1?V[a]=Z(V[a]):a;}int main(){S(N)R S(A[i])R{S(u)A[i]-=u;V[i]=-1;}R{S(u)P[i]=1./u;E+=f(i);}S(N)R{S(u)S(v)u=Z(u-1);v=Z(v-1);if(u^v){V[v]=u;E-=f(u)+f(v);A[u]+=A[v];P[u]+=P[v];E+=f(u);}printf("%f\n",E);}return 0;}
0