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Submission #584914

# Submission time Handle Problem Language Result Execution time Memory
584914 2022-06-28T06:40:00 Z 박상훈(#8379) 도장 모으기 (JOI14_stamps) C++14
85 / 100
 1000 ms 144216 KB 
#include <bits/stdc++.h>

typedef long long ll;
using namespace std;
const ll INF = 4e18;
struct Seg{
    ll tree[6060];
    int sz;
    void init(int n){
        sz = n;
        fill(tree, tree+sz*2, INF);
    }
    void update(int p, ll x){
        p += sz;
        for (tree[p]=min(tree[p], x);p>1;p>>=1) tree[p>>1] = min(tree[p], tree[p^1]);
    }
    ll query(int l, int r){
        r++;
        ll ret = INF;
        for (l+=sz, r+=sz;l<r;l>>=1, r>>=1){
            if (l&1) ret = min(ret, tree[l++]);
            if (r&1) ret = min(ret, tree[--r]);
        }
        return ret;
    }
}M1, M3[3030];
struct Seg2{
    ll tree[6060];
    int sz;
    void init(int n){
        sz = n;
        fill(tree, tree+sz*2, INF);
    }
    ll query(int p){
        p += sz;
        ll ret = tree[p];
        for (p>>=1;p;p>>=1) ret = min(ret, tree[p]);
        return ret;
    }
    void update(int l, int r, ll x){
        r++;
        for (l+=sz, r+=sz;l<r;l>>=1, r>>=1){
            if (l&1){
                tree[l] = min(tree[l], x);
                l++;
            }
            if (r&1){
                --r;
                tree[r] = min(tree[r], x);
            }
        }
    }
}M2;
ll dp[3030][3030], cstS[3030], dcstS[3030], UD[3030], DU[3030], T;

ll cst(int l, int r){
    if (r<l) return 0;
    return cstS[r] - cstS[l-1];
}

ll dcst(int l, int r){
    if (r<l) return 0;
    return cstS[r] - cstS[l-1] - (dcstS[r] - dcstS[l-1]);
}

ll Tij(int r, int l){
    return T*(r-l)*2 + UD[r] + DU[l];
}

int main(){
    int n;
    scanf("%d %lld", &n, &T);
    for (int i=1;i<=n;i++){
        int u, v, d, e;
        scanf("%d %d %d %d", &u, &v, &d, &e);
        UD[i] = u + e;
        DU[i] = d + v;
        int uu = u+v, dd = d+e;
        cstS[i] = cstS[i-1] + uu;
        dcstS[i] = dcstS[i-1] + max(uu-dd, 0);

        M3[i].init(n+1);
    }

    M1.init(n+1);
    M2.init(n+1);

    ll ans = T*(n+1) + cst(1, n);

    for (int i=1;i<=n;i++){
        for (int j=1;j<i;j++){
            dp[i][j] = T*i + cst(1, j-1) + dcst(j+1, i-1) + Tij(i, j);
            for (int k=1;k<=j;k++){
                for (int l=1;l<k;l++){
                    ///case 1. k<=j
                    dp[i][j] = min(dp[i][j], dp[k][l] + T*(i-k) + cst(k+1, j-1) + dcst(j+1, i-1) + Tij(i, j));
                }
            }

            for (int k=j+1;k<=i;k++){
                for (int l=1;l<j;l++){
                    ///case 2. k>j, l<j
                    dp[i][j] = min(dp[i][j], dp[k][l] + T*(i-k) + dcst(k+1, i-1) + Tij(i, j) - dcst(j, j));
                }

                if (k==i) break;
                ///case 3.k>j, l=j
                int l = j;
                dp[i][j] = min(dp[i][j], dp[k][l] + T*(i-k) + dcst(k+1, i-1) + Tij(i, j));
            }

            ans = min(ans, dp[i][j] + T*(n+1-i) + cst(i+1, n));
        }
    }

    //printf("%lld\n", dp[2][1]);
    printf("%lld\n", ans);
    return 0;
}

Compilation message

stamps.cpp: In function 'int main()':
stamps.cpp:72:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   72 |     scanf("%d %lld", &n, &T);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
stamps.cpp:75:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   75 |         scanf("%d %d %d %d", &u, &v, &d, &e);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 468 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 0 ms 468 KB Output is correct
11 Correct 0 ms 468 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct

Subtask #2
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 1248 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 21 ms 1336 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 2 ms 852 KB Output is correct
7 Correct 10 ms 1108 KB Output is correct
8 Correct 13 ms 1244 KB Output is correct
9 Correct 14 ms 1308 KB Output is correct
10 Correct 15 ms 1284 KB Output is correct
11 Correct 16 ms 1260 KB Output is correct
12 Correct 15 ms 1236 KB Output is correct
13 Correct 17 ms 1336 KB Output is correct
14 Correct 16 ms 1288 KB Output is correct
15 Correct 16 ms 1364 KB Output is correct
16 Correct 16 ms 1408 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1093 ms 144216 KB Time limit exceeded
2 Halted 0 ms 0 KB -