結果
問題 | No.1365 [Cherry 1st Tune] Whose Fault? |
ユーザー |
👑 ![]() |
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 |
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
#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;}