Submission #361503

#	Time	Username	Problem	Language	Result	Execution time	Memory
361503		Killer2501	도장 모으기 (JOI14_stamps)	C++14	100 / 100	109 ms	71420 KiB

stamps

#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define task "talltree"
#define pll pair<ll, ll>
#define pii pair<ll, pll>
#define fi first
#define se second
#define ull unsigned long long
using namespace std;
const ll mod = 1e15+7;
const ll N = 3005;
vector<pll> adj[N];
vector<ll> kq;
ll n, m, t, k, b[N],  lab[N], u, v, h[N], a[N], ans, tong, dp[N][N];
priority_queue< pii, vector<pii>, greater<pii> > pq;
struct
{
    ll u, v, d, e, gor, gol, str, stl;
}p[N];
void sol()
{
    cin >> n >> t;
    for(int i = 0; i < n; i ++)
    {
        cin >> p[i].u >> p[i].v >> p[i].d >> p[i].e;
        p[i].gor = p[i].u + p[i].e;
        p[i].gol = p[i].v + p[i].d;
        p[i].str = p[i].u + p[i].v;
        p[i].stl = p[i].d + p[i].e;
    }
    for(int i = 0; i <= n; i ++)for(int j = 0; j <= n+1; j ++)dp[i][j] = mod;
    dp[0][0] = 0;
    for(int i = 0; i < n; i ++)
    {
        for(int j = 0; j <= n; j ++)
        {
            if(j > 0)dp[i][j] = min(dp[i][j], dp[i][j-1] + p[i].gol - 2 * t * i);
            dp[i+1][j] = min(dp[i+1][j], dp[i][j] + p[i].str);
            if(j > 0)dp[i+1][j] = min(dp[i+1][j], dp[i][j] + p[i].stl);
            dp[i+1][j+1] = min(dp[i+1][j+1], dp[i][j] + p[i].gol - 2 * t * i);
            if(j > 0)dp[i+1][j-1] = min(dp[i+1][j-1], dp[i][j] + p[i].gor + 2 * i * t);
        }
    }
    cout << t * (n+1) + dp[n][0];
}
int main()
{
    if(fopen(task".inp", "r")){
       freopen(task".inp", "r", stdin);
       freopen(task".out", "w", stdout);
    }
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int ntest = 1;
    //cin >> ntest;
    while(ntest -- > 0)
    sol();
}

Compilation message (stderr)

stamps.cpp: In function 'int main()':
stamps.cpp:50:15: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   50 |        freopen(task".inp", "r", stdin);
      |        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
stamps.cpp:51:15: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   51 |        freopen(task".out", "w", stdout);
      |        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 75 / 75
• Subtask 3: 15 / 15