제출 #294964

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
294964		crossing0ver	Visiting Singapore (NOI20_visitingsingapore)	C++17	4 / 100	310 ms	262144 KiB

VisitingSingapore

#include<bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
using namespace std;
int k,n,m,a,b,hap[5005],s[5005],t[5005];
int dp[5005][5005][2][2];
void change(int& a,int b) {
    if (a < b)
        a = b;
}
main() {
    cin >> k >> n >> m >> a >> b;
    for (int i = 1; i <= k; i++)
        cin >> hap[i];
    for (int i = 1; i <= n; i++)
        cin >> s[i];
    for (int i = 1; i <= m; i++)
        cin >> t[i];
    int ans = a + b*m;
    const int inf = -1e8;
  //
  //for (int j = 1; j <= m ;j ++)
///  dp[0][j][1] = inf,dp[0][j][0] = a + b*j;
   // for (int i = 1; i <= n; i++)
    //    for (int j = 1; j <= m; j++)
     //       dp[i][j][0] = dp[i][j][1] = inf;
    // dp[i][j][a1][a2] - already started
    for (int i = 1; i <= n; i++)
    for (int j = 1; j <= m; j++) {
      //     dp[i][j]_ taken j-th one
            // 0 _ last not used
            // 1 _ last used
           // dp[i][j][0] = a + j*b;
           //[0][0] // i_not used, j-not used
           dp[i][j][0][0] = a + j*b + a + b;
           for (int x = 0; x < 2; x++)
           for (int y = 0; y < 2; y++) {
               int c = 0;
            if (y == 0) c += b + (j == 1 ? a : 0);
            else c += a + b;
            if (x == 0) c += b + (i == 1 ? a : 0);
            else c += a + b;
            change(dp[i][j][0][0],c + dp[i-1][j-1][x][y]);
           }

           dp[i][j][0][1] = a + j*b + a + b;
           for (int x = 0; x < 2; x++){
               int c = 0;
            if (x == 0) c += b + (i == 1 ? a : 0);
            else c += a + b;
            change(dp[i][j][0][1],c + dp[i-1][j][x][1]);
           }


           if (s[i] != t[j]) dp[i][j][1][1] = inf;
           else {
                int adit = hap[ t[j] ];
            dp[i][j][1][1] = adit + (j-1)*b + (j > 1 ? a : 0);
            if (i != 1)
           for (int x = 0; x < 2; x++)
            for (int y = 0; y < 2; y++) {
             //       int c = 0;
            //if (x == 0) c += (i == 1 ? )
                change(dp[i][j][1][1],adit + dp[i-1][j-1][x][y]);
           }
           }

           dp[i][j][1][0] = a + b + a + j*b;
           for (int y = 0; y < 2; y++) {
                int c = 0;
           if (y == 0) c += b + (j == 1 ? a : 0);
           else c += a + b;
            change(dp[i][j][1][0],dp[i][j-1][1][y] + c);
           }
           for (int x = 0 ; x < 2; x++)
            for (int  y= 0 ; y < 2; y++)
            change(ans,dp[i][j][x][y] + (y ? (j == m ? 0 : a ) + (m-j)*b : (m - j)*b));
           /*
           dp[i][j][0][0] = dp[i-1][j-1][0][0] + b + b;
           dp[i][j][0][0] = dp[i-1][j-1][0][0] + b + b;
           dp[i][j][0][0]
           dp[i][j][0] = a + j*b + b+a;
            if (j!=1)
            dp[i][j][0] = max(dp[i][j][0],dp[i][j-1][1]  +  a + b);
    //        if (i>1)
    //    dp[i][j][0] = max(dp[i][j][0],dp[i-1][j][0]+b);
       // else
       // dp[i][j][0] = max(dp[i][j][0],dp[i-1][j][0]+b);
        if (j != 1)
        dp[i][j][0] = max(dp[i][j][0],dp[i][j-1][0]+b);

        dp[i][j][0] = max(dp[i][j][0],dp[i-1][j][1] + a + b + b + a);
        dp[i][j][0] = max(dp[i][j][0], dp[i-1][j][0] + a + b);
        ans = max(ans,dp[i][j][0] + b*(m-j));
        if (s[i] != t[j])
            dp[i][j][1] = inf;
        else {
            int adit = hap[ t[j] ];
                dp[i][j][1] = (j > 1? a : 0) + (j-1)*b + adit;
            dp[i][j][1] = max(dp[i][j][1],adit + dp[i-1][j-1][1]);
            //dp[i][j][1] = max(dp[i][j][1],adit + dp[i-1][j-1][1]);
            dp[i][j][1] = max(dp[i][j][1],adit + dp[i-1][j-1][0] );
            ans = max(ans,dp[i][j][1] + (m-j)*b + (j != m ? a : 0));*/
    }
   // cout << dp[3][3][1][1];exit(0);
    cout << ans;



    /*
    if (m <= n) {
    ans = max(ans, hap[1]*m);
    }else {
        ans = max(ans,hap[1]*n + (m-n)*B + A);
    }
    cout << ans;*/



}

컴파일 시 표준 에러 (stderr) 메시지

VisitingSingapore.cpp:11:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   11 | main() {
      |      ^

• Subtask 1: 4 / 4
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• Subtask 3: 0 / 12
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• Subtask 7: 0 / 50