Submission #354339

#	Time	Username	Problem	Language	Result	Execution time	Memory
354339		Kerim	Roller Coaster Railroad (IOI16_railroad)	C++17	34 / 100	101 ms	8940 KiB

railroad

#include "railroad.h"
#include "bits/stdc++.h"
#define MAXN 100009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second
#define my_little_dodge 46
#define debug(x)  cerr<< #x <<" = "<< x<<endl;
using namespace std;

typedef long long ll;
typedef pair<int,int> PII;
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
const ll B=1e15;
ll dp[1<<16][16];
vector<int>s,t;
int n,all;
ll rec(int mask,int last){
	if(mask==all)
		return 0;
	ll &ret=dp[mask][last];
	if(~ret)return ret;ret=B;
	for(int i=0;i<n;i++)
		if(!(mask>>i&1))
			umin(ret,rec(mask|(1<<i),i)+max(0,t[last]-s[i]));
	return ret;
}
long long plan_roller_coaster(vector<int> S, vector<int> T) {
	s=S;t=T;
    n = (int) s.size();
    if(n<=16){
    	memset(dp,-1,sizeof dp);
    	all=(1<<n)-1;
    	ll ans=B;
    	for(int i=0;i<n;i++)
    		umin(ans,rec((1<<i),i));
    	return ans;
    }
	return 0;
}

Compilation message (stderr)

railroad.cpp: In function 'll rec(int, int)':
railroad.cpp:29:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   29 |  if(~ret)return ret;ret=B;
      |  ^~
railroad.cpp:29:21: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   29 |  if(~ret)return ret;ret=B;
      |                     ^~~

• Subtask 1: 11 / 11
• Subtask 2: 23 / 23
• Subtask 3: 0 / 30
• Subtask 4: 0 / 36