Submission #940313

#	Time	Username	Problem	Language	Result	Execution time	Memory
940313		andrei_boaca	Sightseeing in Kyoto (JOI22_kyoto)	C++17	0 / 100	21 ms	34156 KiB

kyoto

#include <bits/stdc++.h>

using namespace std;
//ofstream fout("date.out");
mt19937 rng(chrono::steady_clock().now().time_since_epoch().count());
typedef long long ll;
const ll INF=1e17;
ll n,m;
ll lin[100005],col[100005],dp[1005][1005];
ll from[1005][1005];
string dig(ll x)
{
    string s;
    while(x!=0)
    {
        s.push_back(char('0'+x%10));
        x/=10;
    }
    while(s.size()<4)
        s.push_back('0');
    reverse(s.begin(),s.end());
    return s;
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin>>n>>m;
    for(int i=1;i<=n;i++)
        cin>>lin[i];
    for(int i=1;i<=m;i++)
        cin>>col[i];
    for(int i=1;i<=n;i++)
        for(int j=1;j<=m;j++)
            if(i!=1||j!=1)
            {
                dp[i][j]=INF;
                if(i>1&&dp[i-1][j]+col[j]<dp[i][j])
                {
                    dp[i][j]=min(dp[i][j],dp[i-1][j]+col[j]);
                    from[i][j]=1;
                }
                if(j>1&&dp[i][j-1]+lin[i]<dp[i][j])
                {
                    dp[i][j]=min(dp[i][j],dp[i][j-1]+lin[i]);
                    from[i][j]=2;
                }
            }
    cout<<dp[n][m];
    int i=n,j=m;
    int prv=0;
    int changes=0;
    while(i!=1||j!=1)
    {
        if(from[i][j]!=prv&&prv!=0)
            changes++;
        prv=from[i][j];
        if(from[i][j]==1)
            i--;
        else
            j--;
    }
    assert(changes<=15);
    return 0;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 30
• Subtask 3: 0 / 60