Submission #387743

#	Time	Username	Problem	Language	Result	Execution time	Memory
387743		ismoilov	Race (IOI11_race)	C++14	9 / 100	3051 ms	12328 KiB

race

#include "race.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define IOS ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).begin(), (x).end()
#define fp(a,i,c) for(ll (a) = (i); (a) < (c); (a)++)
#define fpp(a,i,c) for(ll (a) = (i); (a) <= (c); (a)++)
#define fv(c) for(int (a) = (1); (a) <= (c); (a)++)
#define fz(c) for(int (a) = (0); (a) < (c); (a)++)
#define fm(a,i,c) for(int (a) = (i); (a) > (c); (a)--)
#define fmm(a,i,c) for(int (a) = (i); (a) >= (c); (a)--)
#define pb push_back
#define in insert
#define ss second
#define ff first
vector <pair<ll, ll>> v[200001];
ll a[200001], b[200001];
ll kk, mn = 1e9;
void dfs(ll x)
{
	for(auto it : v[x]){
		if(it.first != x){
			a[it.first] = a[x]+it.second;
			b[it.first] = b[x]+1;
			if(a[it.first] == kk)
				mn = min(mn, b[it.first]);
			dfs(it.first);
		}
	}
}
int best_path(int n, int k, int h[][2], int l[])
{
	kk = k;
	fp(i,1,n)
		v[h[i][0]].pb({h[i][1], l[i]});
	fp(i,0,n)
	{
		memset(a, 0, sizeof(a));
		memset(b, 0, sizeof(b));
		dfs(i);
	}
	mn = (mn == 1e9 ? -1 : mn);
	return mn;
}

Compilation message (stderr)

race.cpp: In function 'int best_path(int, int, int (*)[2], int*)':
race.cpp:10:26: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   10 | #define fp(a,i,c) for(ll (a) = (i); (a) < (c); (a)++)
      |                          ^
race.cpp:38:2: note: in expansion of macro 'fp'
   38 |  fp(i,1,n)
      |  ^~
race.cpp:10:26: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   10 | #define fp(a,i,c) for(ll (a) = (i); (a) < (c); (a)++)
      |                          ^
race.cpp:40:2: note: in expansion of macro 'fp'
   40 |  fp(i,0,n)
      |  ^~

• Subtask 1: 9 / 9
• Subtask 2: 0 / 12
• Subtask 3: 0 / 22
• Subtask 4: 0 / 57