oj.uz

답안 #278016

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
278016 2020-08-21T08:49:12 Z AKaan37 Magic Tree (CEOI19_magictree) C++17
37 / 100
 132 ms 31736 KB 
//Bismillahirrahmanirrahim
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#include <bits/stdc++.h>

using namespace std;

typedef long long lo;
typedef pair< lo,lo > PII;

#define fi first
#define se second
#define int long long
#define mp make_pair
#define endl "\n"
#define pb push_back
#define fio() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define FOR for(int i=1;i<=n;i++)
#define mid ((start+end)/2)
#define ort ((bas+son)/2)

const lo inf = 1000000000000000000;
const lo KOK = 100000;
const lo LOG = 30;
const lo li = 100005;
const lo mod = 1000000007;

int n,m,b[li],a[li],k,flag,t,dp[li][25];
int cev;
string s;
PII p[li];
vector<int> v[li];

inline void dfs(int node,int ata){
	for(int i=0;i<(int)v[node].size();i++){
		int go=v[node][i];
		if(go==ata)continue;
		dfs(go,node);
	}
	
	if(p[node].fi!=0){
		for(int i=p[node].fi;i<=p[node].fi;i++){
			dp[node][i]=max(dp[node][i],(dp[node][p[node].fi]+p[node].se));
		}
	}
	for(int i=1;i<=k;i++)dp[node][i]=max(dp[node][i],dp[node][i-1]);
	//~ cout
	for(int i=1;i<=k;i++){
		dp[ata][i]+=(dp[node][i]);
	}
}

main(void){
	scanf("%lld %lld %lld",&n,&m,&k);
	for(int i=2;i<=n;i++){
		int x;
		scanf("%lld",&x);
		v[i].pb(x);
		v[x].pb(i);
	}
	for(int i=1;i<=m;i++){
		int x,y,z;
		scanf("%lld %lld %lld",&x,&y,&z);
		cev+=z;
		p[x].fi=y;
		p[x].se=z;
	}
	if(k<=20){
		cev=0;
		dfs(1,0);
		for(int i=1;i<=k;i++)cev=max(cev,dp[i][k]);
	}
	printf("%lld\n",cev);
	return 0;
}

Compilation message

magictree.cpp:55:10: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   55 | main(void){
      |          ^
magictree.cpp: In function 'int main()':
magictree.cpp:56:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   56 |  scanf("%lld %lld %lld",&n,&m,&k);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
magictree.cpp:59:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   59 |   scanf("%lld",&x);
      |   ~~~~~^~~~~~~~~~~
magictree.cpp:65:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   65 |   scanf("%lld %lld %lld",&x,&y,&z);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 2688 KB Output is correct
2 Correct 2 ms 2688 KB Output is correct
3 Correct 2 ms 2688 KB Output is correct
4 Correct 2 ms 2688 KB Output is correct
5 Correct 2 ms 2688 KB Output is correct
6 Correct 2 ms 2688 KB Output is correct
7 Correct 2 ms 2688 KB Output is correct
8 Correct 2 ms 2688 KB Output is correct
9 Correct 2 ms 2688 KB Output is correct

Subtask #2
3.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 51 ms 8056 KB Output is correct
2 Correct 41 ms 7456 KB Output is correct
3 Correct 76 ms 10872 KB Output is correct
4 Correct 84 ms 10216 KB Output is correct
5 Correct 72 ms 10744 KB Output is correct

Subtask #3
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 3 ms 2688 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 132 ms 27580 KB Output is correct
2 Correct 113 ms 27544 KB Output is correct
3 Correct 88 ms 29048 KB Output is correct
4 Correct 71 ms 27756 KB Output is correct
5 Correct 76 ms 31736 KB Output is correct

Subtask #5
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 2688 KB Output is correct
2 Correct 2 ms 2688 KB Output is correct
3 Correct 2 ms 2688 KB Output is correct
4 Correct 2 ms 2688 KB Output is correct
5 Correct 2 ms 2688 KB Output is correct
6 Correct 2 ms 2688 KB Output is correct
7 Correct 2 ms 2688 KB Output is correct
8 Correct 2 ms 2688 KB Output is correct
9 Correct 2 ms 2688 KB Output is correct
10 Correct 110 ms 27640 KB Output is correct
11 Correct 110 ms 27596 KB Output is correct
12 Correct 90 ms 29188 KB Output is correct
13 Correct 71 ms 27756 KB Output is correct
14 Correct 74 ms 31608 KB Output is correct

Subtask #6
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 8 ms 3712 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 2688 KB Output is correct
2 Correct 2 ms 2688 KB Output is correct
3 Correct 2 ms 2688 KB Output is correct
4 Correct 2 ms 2688 KB Output is correct
5 Correct 2 ms 2688 KB Output is correct
6 Correct 2 ms 2688 KB Output is correct
7 Correct 2 ms 2688 KB Output is correct
8 Correct 2 ms 2688 KB Output is correct
9 Correct 2 ms 2688 KB Output is correct
10 Incorrect 3 ms 2688 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #8
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 2688 KB Output is correct
2 Correct 2 ms 2688 KB Output is correct
3 Correct 2 ms 2688 KB Output is correct
4 Correct 2 ms 2688 KB Output is correct
5 Correct 2 ms 2688 KB Output is correct
6 Correct 2 ms 2688 KB Output is correct
7 Correct 2 ms 2688 KB Output is correct
8 Correct 2 ms 2688 KB Output is correct
9 Correct 2 ms 2688 KB Output is correct
10 Correct 51 ms 8056 KB Output is correct
11 Correct 41 ms 7456 KB Output is correct
12 Correct 76 ms 10872 KB Output is correct
13 Correct 84 ms 10216 KB Output is correct
14 Correct 72 ms 10744 KB Output is correct
15 Incorrect 3 ms 2688 KB Output isn't correct
16 Halted 0 ms 0 KB -