Submission #2165603


Source Code Expand

#include<cstdio>
#include<algorithm>
#include<cstring>
#define ll long long 
struct r{
	int u,v,w;
}e[400050];
int w[200050],fa[200050],cnt,n,m;
ll ans;
int get_fa(int u){return fa[u]==u ? u:fa[u]=get_fa(fa[u]);}
bool cmp(r a,r b){return a.w<b.w;}
int main(){
	scanf("%d%d",&n,&m);
	memset(w,127,sizeof w);
	for (int i=1;i<=m;i++){
		scanf("%d%d%d",&e[i].u,&e[i].v,&e[i].w);
		w[e[i].u]=std::min(w[e[i].u],e[i].w+1);
		w[e[i].v]=std::min(w[e[i].v],e[i].w+2);
	}
	for (int i=0;i<n;i++) fa[i]=i;
	for (int i=1;i<(n<<1);i++)
		w[i]=std::min(w[i],w[i-1]+2);
	for (int i=0;i<n;i++)
		e[++m]=(r){i,(i+1)%n,std::min(w[i],w[i+n])};
	std::sort(e+1,e+m+1,cmp);
	for (int i=1;i<=m;i++){
		if (get_fa(e[i].u)==get_fa(e[i].v)) continue;
		fa[e[i].v]=fa[e[i].u];
		ans+=1ll*e[i].w;
		cnt++;
		if (cnt==n-1) {
			printf("%lld",ans);
			return 0;
		}
	}
} 

Submission Info

Submission Time
Task G - Zigzag MST
User vjudge5
Language C++14 (GCC 5.4.1)
Score 0
Code Size 840 Byte
Status WA
Exec Time 95 ms
Memory 6400 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:13:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&m);
                     ^
./Main.cpp:16:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d",&e[i].u,&e[i].v,&e[i].w);
                                          ^

Judge Result

Set Name sample all
Score / Max Score 0 / 0 0 / 1300
Status
AC × 3
AC × 8
WA × 28
Set Name Test Cases
sample sample-01.txt, sample-02.txt, sample-03.txt
all 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
Case Name Status Exec Time Memory
01-01.txt AC 1 ms 896 KB
01-02.txt AC 64 ms 3456 KB
01-03.txt WA 91 ms 6400 KB
01-04.txt WA 21 ms 4224 KB
01-05.txt WA 20 ms 4224 KB
01-06.txt WA 21 ms 4224 KB
01-07.txt WA 21 ms 4224 KB
01-08.txt WA 22 ms 4224 KB
01-09.txt WA 23 ms 4224 KB
01-10.txt WA 53 ms 6272 KB
01-11.txt WA 82 ms 5888 KB
01-12.txt WA 92 ms 6400 KB
01-13.txt WA 91 ms 6400 KB
01-14.txt WA 92 ms 6400 KB
01-15.txt WA 91 ms 6400 KB
01-16.txt WA 90 ms 6400 KB
01-17.txt WA 91 ms 6400 KB
01-18.txt WA 74 ms 6400 KB
01-19.txt WA 21 ms 4224 KB
01-20.txt WA 19 ms 4224 KB
01-21.txt WA 31 ms 6272 KB
01-22.txt WA 71 ms 6400 KB
01-23.txt WA 71 ms 6400 KB
01-24.txt WA 24 ms 4224 KB
01-25.txt WA 95 ms 6400 KB
01-26.txt WA 20 ms 4224 KB
01-27.txt WA 24 ms 4224 KB
01-28.txt WA 59 ms 6272 KB
01-29.txt WA 76 ms 5888 KB
01-30.txt WA 85 ms 6400 KB
sample-01.txt AC 1 ms 896 KB
sample-02.txt AC 1 ms 896 KB
sample-03.txt AC 1 ms 896 KB