oj.uz

답안 #110102

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
110102 2019-05-09T13:17:21 Z nxteru Fireworks (APIO16_fireworks) C++14
7 / 100
 11 ms 7424 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> P;
#define F first
#define S second
#define PB push_back
ll n,m;
P x[300005],y[300005];
vector<P>g[300005];
void dfs(int v){
	if(g[v].size()==0)return;
	vector<ll>r;
	for(int i=0;i<g[v].size();i++){
		ll u=g[v][i].F,c=g[v][i].S;
		dfs(u);
		x[u].F+=c;
		y[u].F+=c;
		r.PB(x[u].F);
		r.PB(y[u].F);
	}
	sort(r.begin(),r.end());
	x[v].F=r[g[v].size()-1];
	y[v].F=r[g[v].size()];
	for(int i=0;i<g[v].size();i++){
		ll u=g[v][i].F,c=x[u].S;
		x[v].S+=c;
		y[v].S+=c;
		if(x[v].F<x[u].F)x[v].S+=x[u].F-x[v].F;
		if(x[v].F>y[u].F)x[v].S+=x[v].F-y[u].F;
		if(y[v].F<x[u].F)y[v].S+=x[u].F-y[v].F;
		if(y[v].F>y[u].F)y[v].S+=y[v].F-y[u].F;
	}
}
int main(void){
    scanf("%lld%lld",&n,&m);
    n+=m;
    for(int i=1;i<n;i++){
		ll p,c;
		scanf("%lld%lld",&p,&c);
		g[--p].PB(P(i,c));
	}
	dfs(0);
	printf("%lld\n",x[0].S);
}

Compilation message

fireworks.cpp: In function 'void dfs(int)':
fireworks.cpp:14:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<g[v].size();i++){
              ~^~~~~~~~~~~~
fireworks.cpp:25:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<g[v].size();i++){
              ~^~~~~~~~~~~~
fireworks.cpp: In function 'int main()':
fireworks.cpp:36:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld%lld",&n,&m);
     ~~~~~^~~~~~~~~~~~~~~~~~
fireworks.cpp:40:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld%lld",&p,&c);
   ~~~~~^~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 7424 KB Output is correct
2 Correct 8 ms 7424 KB Output is correct
3 Correct 9 ms 7424 KB Output is correct
4 Correct 10 ms 7424 KB Output is correct
5 Correct 10 ms 7424 KB Output is correct
6 Correct 9 ms 7424 KB Output is correct
7 Correct 9 ms 7424 KB Output is correct
8 Correct 9 ms 7424 KB Output is correct
9 Correct 9 ms 7424 KB Output is correct
10 Correct 9 ms 7424 KB Output is correct

Subtask #2
0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 7396 KB Output is correct
2 Correct 9 ms 7424 KB Output is correct
3 Incorrect 9 ms 7424 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 7424 KB Output is correct
2 Correct 8 ms 7424 KB Output is correct
3 Correct 9 ms 7424 KB Output is correct
4 Correct 10 ms 7424 KB Output is correct
5 Correct 10 ms 7424 KB Output is correct
6 Correct 9 ms 7424 KB Output is correct
7 Correct 9 ms 7424 KB Output is correct
8 Correct 9 ms 7424 KB Output is correct
9 Correct 9 ms 7424 KB Output is correct
10 Correct 9 ms 7424 KB Output is correct
11 Correct 11 ms 7396 KB Output is correct
12 Correct 9 ms 7424 KB Output is correct
13 Incorrect 9 ms 7424 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #4
0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 7424 KB Output is correct
2 Correct 8 ms 7424 KB Output is correct
3 Correct 9 ms 7424 KB Output is correct
4 Correct 10 ms 7424 KB Output is correct
5 Correct 10 ms 7424 KB Output is correct
6 Correct 9 ms 7424 KB Output is correct
7 Correct 9 ms 7424 KB Output is correct
8 Correct 9 ms 7424 KB Output is correct
9 Correct 9 ms 7424 KB Output is correct
10 Correct 9 ms 7424 KB Output is correct
11 Correct 11 ms 7396 KB Output is correct
12 Correct 9 ms 7424 KB Output is correct
13 Incorrect 9 ms 7424 KB Output isn't correct
14 Halted 0 ms 0 KB -