#include<bits/stdc++.h>
#define int long long
using namespace std;
int n,m,fa[600005],w[600005],rd[600005];
int rt[600005],lc[600005],rc[600005],v[600005],dis[600005],tot,ans;
int getnew(int x){
v[++tot]=x;return tot;
}
int merge(int x,int y){
if(!x||!y)return x+y;
if(v[y]>v[x])swap(x,y);
rc[x]=merge(rc[x],y);
if(dis[lc[x]]<dis[rc[x]])swap(lc[x],rc[x]);
dis[x]=dis[rc[x]]+1;
return x;
}
signed main(){
scanf("%lld%lld",&n,&m);dis[0]=-1;
for(int i=2;i<=n+m;i++){
scanf("%lld%lld",&fa[i],&w[i]);rd[fa[i]]++;
ans+=w[i];
}
for(int i=n+m;i>=2;i--){
int l=0,r=0;
if(i<=n)while(rd[i]-->1)rt[i]=merge(lc[rt[i]],rc[rt[i]]);
r=v[rt[i]],rt[i]=merge(lc[rt[i]],rc[rt[i]]);
l=v[rt[i]],rt[i]=merge(lc[rt[i]],rc[rt[i]]);
rt[i]=merge(rt[i],merge(getnew(l+w[i]),getnew(r+w[i])));
rt[fa[i]]=merge(rt[fa[i]],rt[i]);
}
while(rd[1]--)rt[1]=merge(lc[rt[1]],rc[rt[1]]);
while(rt[1])ans=ans-v[rt[1]],rt[1]=merge(lc[rt[1]],rc[rt[1]]);
printf("%lld",ans);
}
Compilation message
fireworks.cpp: In function 'int main()':
fireworks.cpp:18:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
18 | scanf("%lld%lld",&n,&m);dis[0]=-1;
| ~~~~~^~~~~~~~~~~~~~~~~~
fireworks.cpp:20:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
20 | scanf("%lld%lld",&fa[i],&w[i]);rd[fa[i]]++;
| ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
1 ms |
408 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
1 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
1 ms |
600 KB |
Output is correct |
| 5 |
Correct |
1 ms |
344 KB |
Output is correct |
| 6 |
Correct |
1 ms |
428 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
1 ms |
348 KB |
Output is correct |
| 9 |
Correct |
1 ms |
348 KB |
Output is correct |
| 10 |
Correct |
1 ms |
348 KB |
Output is correct |
| 11 |
Correct |
0 ms |
348 KB |
Output is correct |
| 12 |
Correct |
0 ms |
604 KB |
Output is correct |
| 13 |
Correct |
1 ms |
348 KB |
Output is correct |
| 14 |
Correct |
0 ms |
348 KB |
Output is correct |
| 15 |
Correct |
1 ms |
348 KB |
Output is correct |
| 16 |
Correct |
1 ms |
348 KB |
Output is correct |
| 17 |
Correct |
1 ms |
344 KB |
Output is correct |
| 18 |
Correct |
1 ms |
416 KB |
Output is correct |
| 19 |
Correct |
0 ms |
348 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
1 ms |
408 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| 11 |
Correct |
0 ms |
348 KB |
Output is correct |
| 12 |
Correct |
1 ms |
348 KB |
Output is correct |
| 13 |
Correct |
0 ms |
348 KB |
Output is correct |
| 14 |
Correct |
1 ms |
600 KB |
Output is correct |
| 15 |
Correct |
1 ms |
344 KB |
Output is correct |
| 16 |
Correct |
1 ms |
428 KB |
Output is correct |
| 17 |
Correct |
0 ms |
348 KB |
Output is correct |
| 18 |
Correct |
1 ms |
348 KB |
Output is correct |
| 19 |
Correct |
1 ms |
348 KB |
Output is correct |
| 20 |
Correct |
1 ms |
348 KB |
Output is correct |
| 21 |
Correct |
0 ms |
348 KB |
Output is correct |
| 22 |
Correct |
0 ms |
604 KB |
Output is correct |
| 23 |
Correct |
1 ms |
348 KB |
Output is correct |
| 24 |
Correct |
0 ms |
348 KB |
Output is correct |
| 25 |
Correct |
1 ms |
348 KB |
Output is correct |
| 26 |
Correct |
1 ms |
348 KB |
Output is correct |
| 27 |
Correct |
1 ms |
344 KB |
Output is correct |
| 28 |
Correct |
1 ms |
416 KB |
Output is correct |
| 29 |
Correct |
0 ms |
348 KB |
Output is correct |
| 30 |
Correct |
1 ms |
348 KB |
Output is correct |
| 31 |
Correct |
1 ms |
604 KB |
Output is correct |
| 32 |
Correct |
1 ms |
604 KB |
Output is correct |
| 33 |
Correct |
1 ms |
604 KB |
Output is correct |
| 34 |
Correct |
1 ms |
604 KB |
Output is correct |
| 35 |
Correct |
1 ms |
860 KB |
Output is correct |
| 36 |
Correct |
2 ms |
2908 KB |
Output is correct |
| 37 |
Correct |
2 ms |
860 KB |
Output is correct |
| 38 |
Correct |
2 ms |
860 KB |
Output is correct |
| 39 |
Correct |
2 ms |
964 KB |
Output is correct |
| 40 |
Correct |
1 ms |
860 KB |
Output is correct |
| 41 |
Correct |
2 ms |
860 KB |
Output is correct |
| 42 |
Correct |
2 ms |
860 KB |
Output is correct |
| 43 |
Correct |
2 ms |
2860 KB |
Output is correct |
| 44 |
Correct |
2 ms |
856 KB |
Output is correct |
| 45 |
Correct |
3 ms |
1116 KB |
Output is correct |
| 46 |
Correct |
2 ms |
860 KB |
Output is correct |
| 47 |
Correct |
2 ms |
860 KB |
Output is correct |
| 48 |
Correct |
2 ms |
860 KB |
Output is correct |
| 49 |
Correct |
3 ms |
860 KB |
Output is correct |
| 50 |
Correct |
2 ms |
2908 KB |
Output is correct |
| 51 |
Correct |
2 ms |
860 KB |
Output is correct |
| 52 |
Correct |
2 ms |
860 KB |
Output is correct |
| 53 |
Correct |
2 ms |
860 KB |
Output is correct |
| 54 |
Correct |
3 ms |
860 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
1 ms |
408 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
348 KB |
Output is correct |
| 11 |
Correct |
0 ms |
348 KB |
Output is correct |
| 12 |
Correct |
1 ms |
348 KB |
Output is correct |
| 13 |
Correct |
0 ms |
348 KB |
Output is correct |
| 14 |
Correct |
1 ms |
600 KB |
Output is correct |
| 15 |
Correct |
1 ms |
344 KB |
Output is correct |
| 16 |
Correct |
1 ms |
428 KB |
Output is correct |
| 17 |
Correct |
0 ms |
348 KB |
Output is correct |
| 18 |
Correct |
1 ms |
348 KB |
Output is correct |
| 19 |
Correct |
1 ms |
348 KB |
Output is correct |
| 20 |
Correct |
1 ms |
348 KB |
Output is correct |
| 21 |
Correct |
0 ms |
348 KB |
Output is correct |
| 22 |
Correct |
0 ms |
604 KB |
Output is correct |
| 23 |
Correct |
1 ms |
348 KB |
Output is correct |
| 24 |
Correct |
0 ms |
348 KB |
Output is correct |
| 25 |
Correct |
1 ms |
348 KB |
Output is correct |
| 26 |
Correct |
1 ms |
348 KB |
Output is correct |
| 27 |
Correct |
1 ms |
344 KB |
Output is correct |
| 28 |
Correct |
1 ms |
416 KB |
Output is correct |
| 29 |
Correct |
0 ms |
348 KB |
Output is correct |
| 30 |
Correct |
1 ms |
348 KB |
Output is correct |
| 31 |
Correct |
1 ms |
604 KB |
Output is correct |
| 32 |
Correct |
1 ms |
604 KB |
Output is correct |
| 33 |
Correct |
1 ms |
604 KB |
Output is correct |
| 34 |
Correct |
1 ms |
604 KB |
Output is correct |
| 35 |
Correct |
1 ms |
860 KB |
Output is correct |
| 36 |
Correct |
2 ms |
2908 KB |
Output is correct |
| 37 |
Correct |
2 ms |
860 KB |
Output is correct |
| 38 |
Correct |
2 ms |
860 KB |
Output is correct |
| 39 |
Correct |
2 ms |
964 KB |
Output is correct |
| 40 |
Correct |
1 ms |
860 KB |
Output is correct |
| 41 |
Correct |
2 ms |
860 KB |
Output is correct |
| 42 |
Correct |
2 ms |
860 KB |
Output is correct |
| 43 |
Correct |
2 ms |
2860 KB |
Output is correct |
| 44 |
Correct |
2 ms |
856 KB |
Output is correct |
| 45 |
Correct |
3 ms |
1116 KB |
Output is correct |
| 46 |
Correct |
2 ms |
860 KB |
Output is correct |
| 47 |
Correct |
2 ms |
860 KB |
Output is correct |
| 48 |
Correct |
2 ms |
860 KB |
Output is correct |
| 49 |
Correct |
3 ms |
860 KB |
Output is correct |
| 50 |
Correct |
2 ms |
2908 KB |
Output is correct |
| 51 |
Correct |
2 ms |
860 KB |
Output is correct |
| 52 |
Correct |
2 ms |
860 KB |
Output is correct |
| 53 |
Correct |
2 ms |
860 KB |
Output is correct |
| 54 |
Correct |
3 ms |
860 KB |
Output is correct |
| 55 |
Correct |
4 ms |
1884 KB |
Output is correct |
| 56 |
Correct |
14 ms |
7456 KB |
Output is correct |
| 57 |
Correct |
26 ms |
9304 KB |
Output is correct |
| 58 |
Correct |
35 ms |
11868 KB |
Output is correct |
| 59 |
Correct |
46 ms |
15696 KB |
Output is correct |
| 60 |
Correct |
59 ms |
19284 KB |
Output is correct |
| 61 |
Correct |
68 ms |
23892 KB |
Output is correct |
| 62 |
Correct |
78 ms |
26196 KB |
Output is correct |
| 63 |
Correct |
95 ms |
30804 KB |
Output is correct |
| 64 |
Correct |
109 ms |
32340 KB |
Output is correct |
| 65 |
Correct |
53 ms |
35412 KB |
Output is correct |
| 66 |
Correct |
53 ms |
35412 KB |
Output is correct |
| 67 |
Correct |
56 ms |
35412 KB |
Output is correct |
| 68 |
Correct |
97 ms |
33876 KB |
Output is correct |
| 69 |
Correct |
114 ms |
34016 KB |
Output is correct |
| 70 |
Correct |
111 ms |
33876 KB |
Output is correct |
| 71 |
Correct |
179 ms |
32340 KB |
Output is correct |
| 72 |
Correct |
168 ms |
32336 KB |
Output is correct |
| 73 |
Correct |
193 ms |
32156 KB |
Output is correct |
| 74 |
Correct |
175 ms |
32080 KB |
Output is correct |
| 75 |
Correct |
191 ms |
31780 KB |
Output is correct |
| 76 |
Correct |
203 ms |
31916 KB |
Output is correct |
| 77 |
Correct |
204 ms |
31572 KB |
Output is correct |
| 78 |
Correct |
220 ms |
31568 KB |
Output is correct |
| 79 |
Correct |
277 ms |
31536 KB |
Output is correct |
