Submission #1014643

#	Time	Username	Problem	Language	Result	Execution time	Memory
1014643		12345678	Constellation 3 (JOI20_constellation3)	C++17	0 / 100	1 ms	2312 KiB

constellation3

#include <bits/stdc++.h>

using namespace std;

#define ll long long

const int nx=2e3+5;

ll n, m, a, b, c, h[nx], dp[nx][nx], sm[nx], res=LLONG_MAX;
vector<pair<ll, ll>> d[nx];

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n;
    for (int i=1; i<=n; i++) cin>>h[i];
    cin>>m;
    for (int i=1; i<=m; i++) cin>>a>>b>>c, d[a].push_back({b, c}), sm[a]+=c;
    for (int i=1; i<=n; i++)
    {
        for (int j=0; j<=h[i]; j++) dp[i-1][0]=min(dp[i-1][0], dp[i-1][j]);
        for (int j=0; j<=n; j++) dp[i][j]=dp[i-1][j]+sm[i];
        for (auto [b, c]:d[i]) dp[i][b]=min(dp[i][b], dp[i-1][0]+sm[i]-c);
    }
    for (int i=0; i<=n; i++) res=min(res, dp[n][i]);
    cout<<res;
}

• Subtask 1: 0 / 14
• Subtask 2: 0 / 21
• Subtask 3: 0 / 65