Submission #123478

#	Time	Username	Problem	Language	Result	Execution time	Memory
123478		baqargam	Roller Coaster Railroad (IOI16_railroad)	C++14	0 / 100	83 ms	7356 KiB

railroad

#include "bits/stdc++.h"
#include "railroad.h"

using namespace std;

long long j,l,dp[16][1000000],g[100],res=1000000000000000000;
vector<pair<int,int> >v;

long long plan_roller_coaster(std::vector<int> s, std::vector<int> t) {
    int n = (int) s.size();
    for(int i=0;i<(1<<n);i++){
        int ct=__builtin_popcount(i);
        v.push_back({ct,i});
    }
    for(int i=n;i<(1<<n);i++){
        for(int j=0;j<n;j++)
            dp[j][i]=1000000000000000000;
    }
    for(int i=0;i<v.size();i++){
        int a=v[i].second;
        for(j=a,l=0;j>0;j>>=1,l++)
            g[l]=j%2;
        for(int j=0;j<l;j++){
            if(g[j]==1)
            {
                for(int i=0;i<n;i++){
                    if(g[i]==0)
                    {
                        dp[i][a+(1<<i)]=min(dp[i][a+(1ll<<i)],dp[j][a]+max(0,t[j]-s[i]));
                    }
                }
            }
        }
    }
    for(int i=0;i<n;i++){
        res=min(res,dp[i][(1<<n)-1]);
    }
    return res;
}

Compilation message (stderr)

railroad.cpp: In function 'long long int plan_roller_coaster(std::vector<int>, std::vector<int>)':
railroad.cpp:19:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<v.size();i++){
                 ~^~~~~~~~~

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