Submission #1079313

#	Time	Username	Problem	Language	Result	Execution time	Memory
1079313		sjb8032	Marathon Race 2 (JOI24_ho_t3)	C++17	81 / 100	217 ms	137808 KiB

Main

#include <bits/stdc++.h>

using namespace std;
int n,q;
long long x[2005];
long long dpL[2005][2005][2];
long long dpR[2005][2005][2];
long long s,g,t;
const long long INF=1000000000000000000;
long long ans;
int main()
{
    scanf("%d %d",&n,&q);
    for(int i=1; i<=n; i++)
    {
        scanf("%lld",&x[i]);
    }
    sort(x+1,x+n+1);
    scanf("%d",&q);
    for(int i=0; i<=n+1; i++)
    {
        for(int j=0; j<=n+1; j++)
        {
            dpL[i][j][0]=INF;
            dpL[i][j][1]=INF;
            dpR[i][j][0]=INF;
            dpR[i][j][1]=INF;
        }
    }
    dpL[1][n+1][0]=0;
    dpR[0][n][1]=0;
    for(int i=0;i<=n;i++)
    {
        for(int j=n+1;j>i;j--)
        {
            int carry=i+(n+1-j)+1;
            if(i+1<j)
            {
                dpL[i+1][j][0]=min(dpL[i+1][j][0],min(dpL[i][j][0]+carry*(x[i+1]-x[i]),dpL[i][j][1]+carry*(x[j]-x[i+1])));
                dpR[i+1][j][0]=min(dpR[i+1][j][0],min(dpR[i][j][0]+carry*(x[i+1]-x[i]),dpR[i][j][1]+carry*(x[j]-x[i+1])));
            }
            if(i<j-1)
            {
                dpL[i][j-1][1]=min(dpL[i][j-1][1],min(dpL[i][j][0]+carry*(x[j-1]-x[i]),dpL[i][j][1]+carry*(x[j]-x[j-1])));
                dpR[i][j-1][1]=min(dpR[i][j-1][1],min(dpR[i][j][0]+carry*(x[j-1]-x[i]),dpR[i][j][1]+carry*(x[j]-x[j-1])));
            }
        }
    }
    for(int i=1; i<=q; i++)
    {
        scanf("%lld %lld %lld",&s,&g,&t);/// g를 기준으로 왼,오 1,2,3,...,l,r,r+1,...,n
        if(n==1)
        {
            ans=abs(s-x[1])+2*abs(x[1]-g);
            ans++;
            if(ans<=t) printf("Yes\n");
            else printf("No\n");
            continue;
        }
        int k=lower_bound(x+1,x+n+1,g)-x;///g 이상 처음나오는 값의 위치 k번째 왼쪽 k-1-> g 또는 오른쪽 k에서 g k->g
        long long Lmin=min(dpL[k-1][k][0]+(n+1)*abs(g-x[k-1]),dpL[k-1][k][1]+(n+1)*abs(g-x[k]))+abs(s-x[1]);
        long long Rmin=min(dpR[k-1][k][0]+(n+1)*abs(g-x[k-1]),dpR[k-1][k][1]+(n+1)*abs(g-x[k]))+abs(s-x[n]);
        ans=min(Rmin,Lmin)+n;
        if(ans<=t) printf("Yes\n");
        else printf("No\n");
    }
    return 0;
}
/// dp를 새로 계산하지 않고 해야 함->

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:13:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |     scanf("%d %d",&n,&q);
      |     ~~~~~^~~~~~~~~~~~~~~
Main.cpp:16:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |         scanf("%lld",&x[i]);
      |         ~~~~~^~~~~~~~~~~~~~
Main.cpp:19:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |     scanf("%d",&q);
      |     ~~~~~^~~~~~~~~
Main.cpp:51:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |         scanf("%lld %lld %lld",&s,&g,&t);/// g를 기준으로 왼,오 1,2,3,...,l,r,r+1,...,n
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 7 / 7
• Subtask 3: 10 / 10
• Subtask 4: 28 / 28
• Subtask 5: 10 / 10
• Subtask 6: 19 / 19
• Subtask 7: 0 / 19