CODE FESTIVAL 2016 Final

Submission #1192645

Source codeソースコード

#include <cstdio>
#define N 200003
#define IL inline
#define REP(a,b,c) for(a=b;a<=c;a++)
using namespace std;
typedef long long lol;
lol ans;
struct edge{int u,v,w;};
struct Heap{
	int len;edge a[N<<1];
	IL void up(int i){
		int j=i>>1,x=a[i].w;edge y=a[i];
		while(j && x<a[j].w)a[i]=a[j],i=j,j>>=1;
		a[i]=y;
	}
	IL void down(int i){
		int j=i<<1,x=a[i].w;edge y=a[i];
		while(j<=len){
			if(j<len && a[j+1].w<a[j].w)j++;
			if(a[j].w<x)a[i]=a[j],i=j,j<<=1;else break;
		}
		a[i]=y;
	}
	IL void push(edge b){a[++len]=b;up(len);}
	IL edge pop(){edge b=a[1];a[1]=a[len--];down(1);return b;}
}O,H;
int n,q,fa[N];
IL int rd(){
	int res=0;char c;while((c=getchar())<'0'||c>'9');
	while(c>='0'&&c<='9')res=res*10+c-'0',c=getchar();return res;
}
IL int getf(int a){return a==fa[a]?a:fa[a]=getf(fa[a]);}
IL bool link(int a,int b){a=getf(a),b=getf(b);if(a==b)return false;fa[b]=a;return true;}
int main(){
  n=rd(),q=rd();int t,i,u,v,w;edge e;t=n-1;REP(i,1,t)fa[i]=i;
	REP(i,1,q)u=rd(),v=rd(),w=rd(),O.push((edge){u,v,w});
	REP(t,2,n){
		while(1){
			if(O.len &&(!H.len || O.a[1].w<H.a[1].w)){
				e=O.pop();
				H.push((edge){e.u,(e.u+1)%n,e.w+1});
				H.push((edge){e.v,(e.v+1)%n,e.w+2});
				if(link(e.u,e.v)){ans+=e.w;break;}
			}else{
				e=H.a[1];
				if(!link(e.u,e.v))H.pop();
				else{
					ans+=e.w;e.u=e.v,e.v=(e.v+1)%n,e.w+=2,H.a[1]=e,H.down(1);break;
				}
			}
		}
	}
	printf("%lld",ans);
  return 0;
}

Submission

Task問題 G - Zigzag MST
User nameユーザ名 mytryer
Created time投稿日時
Language言語 C++14 (GCC 5.4.1)
Status状態 AC
Score得点 1300
Source lengthソースコード長 1464 Byte
File nameファイル名
Exec time実行時間 95 ms
Memory usageメモリ使用量 8320 KB

Test case

Set

Set name Score得点 / Max score Cases
sample - sample-01.txt,sample-02.txt,sample-03.txt
all 1300 / 1300 sample-01.txt,sample-02.txt,sample-03.txt,01-01.txt,01-02.txt,01-03.txt,01-04.txt,01-05.txt,01-06.txt,01-07.txt,01-08.txt,01-09.txt,01-10.txt,01-11.txt,01-12.txt,01-13.txt,01-14.txt,01-15.txt,01-16.txt,01-17.txt,01-18.txt,01-19.txt,01-20.txt,01-21.txt,01-22.txt,01-23.txt,01-24.txt,01-25.txt,01-26.txt,01-27.txt,01-28.txt,01-29.txt,01-30.txt,sample-01.txt,sample-02.txt,sample-03.txt

Test case

Case name Status状態 Exec time実行時間 Memory usageメモリ使用量
01-01.txt AC 1 ms 2176 KB
01-02.txt AC 27 ms 4224 KB
01-03.txt AC 42 ms 4992 KB
01-04.txt AC 3 ms 2944 KB
01-05.txt AC 3 ms 2944 KB
01-06.txt AC 3 ms 2944 KB
01-07.txt AC 4 ms 2944 KB
01-08.txt AC 5 ms 2944 KB
01-09.txt AC 8 ms 2944 KB
01-10.txt AC 28 ms 4992 KB
01-11.txt AC 45 ms 4736 KB
01-12.txt AC 49 ms 4992 KB
01-13.txt AC 49 ms 4992 KB
01-14.txt AC 49 ms 4992 KB
01-15.txt AC 49 ms 4992 KB
01-16.txt AC 49 ms 4992 KB
01-17.txt AC 49 ms 4992 KB
01-18.txt AC 58 ms 8320 KB
01-19.txt AC 4 ms 2944 KB
01-20.txt AC 14 ms 3072 KB
01-21.txt AC 38 ms 8320 KB
01-22.txt AC 70 ms 8320 KB
01-23.txt AC 73 ms 8320 KB
01-24.txt AC 6 ms 2944 KB
01-25.txt AC 61 ms 4992 KB
01-26.txt AC 3 ms 2944 KB
01-27.txt AC 14 ms 3200 KB
01-28.txt AC 63 ms 5888 KB
01-29.txt AC 85 ms 5632 KB
01-30.txt AC 95 ms 6144 KB
sample-01.txt AC 1 ms 2176 KB
sample-02.txt AC 1 ms 2176 KB
sample-03.txt AC 1 ms 2176 KB