oj.uz

Submission #110103

# Submission time Handle Problem Language Result Execution time Memory
110103 2019-05-09T13:23:48 Z nxteru Fireworks (APIO16_fireworks) C++14
7 / 100
 10 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,x[300005],y[300005],s[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]+=c;
		y[u]+=c;
		r.PB(x[u]);
		r.PB(y[u]);
	}
	sort(r.begin(),r.end());
	x[v]=r[g[v].size()-1];
	y[v]=r[g[v].size()];
	for(int i=0;i<g[v].size();i++){
		ll u=g[v][i].F;
		s[v]+=s[u];
		if(x[v]<x[u])s[v]+=x[u]-x[v];
		if(x[v]>y[u])s[v]+=x[v]-y[u];
	}
}
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",s[0]);
}

Compilation message

fireworks.cpp: In function 'void dfs(int)':
fireworks.cpp:13:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<g[v].size();i++){
              ~^~~~~~~~~~~~
fireworks.cpp:24:15: 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:32:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld%lld",&n,&m);
     ~~~~~^~~~~~~~~~~~~~~~~~
fireworks.cpp:36:8: 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

# Verdict Execution time Memory Grader output
1 Correct 10 ms 7424 KB Output is correct
2 Correct 9 ms 7424 KB Output is correct
3 Correct 9 ms 7424 KB Output is correct
4 Correct 9 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 10 ms 7424 KB Output is correct
9 Correct 8 ms 7424 KB Output is correct
10 Correct 9 ms 7424 KB Output is correct

Subtask #2
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 7424 KB Output is correct
2 Correct 10 ms 7424 KB Output is correct
3 Incorrect 8 ms 7424 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 7424 KB Output is correct
2 Correct 9 ms 7424 KB Output is correct
3 Correct 9 ms 7424 KB Output is correct
4 Correct 9 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 10 ms 7424 KB Output is correct
9 Correct 8 ms 7424 KB Output is correct
10 Correct 9 ms 7424 KB Output is correct
11 Correct 9 ms 7424 KB Output is correct
12 Correct 10 ms 7424 KB Output is correct
13 Incorrect 8 ms 7424 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #4
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 7424 KB Output is correct
2 Correct 9 ms 7424 KB Output is correct
3 Correct 9 ms 7424 KB Output is correct
4 Correct 9 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 10 ms 7424 KB Output is correct
9 Correct 8 ms 7424 KB Output is correct
10 Correct 9 ms 7424 KB Output is correct
11 Correct 9 ms 7424 KB Output is correct
12 Correct 10 ms 7424 KB Output is correct
13 Incorrect 8 ms 7424 KB Output isn't correct
14 Halted 0 ms 0 KB -