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Submission #505222

# Submission time Handle Problem Language Result Execution time Memory
505222 2022-01-11T01:31:28 Z jhnah917 Wombats (IOI13_wombats) C++14
100 / 100
 6038 ms 229172 KB 
#include "wombats.h"
#include <bits/stdc++.h>
using namespace std;

int n, m, q;
int h[5050][222];
int v[5050][222];

struct Node{
    Node *l, *r;
    int data[222][222];
    Node() : l(0), r(0) {
        memset(data, 0, sizeof data);
    }
};

void merge(int a[222][222], int b[222][222], int c[222][222]){ //a = b + c
    int K[222][222] = {0};
    for(int d=1-m; d<m; d++){
        for(int i=1; i<=m; i++){
            int j = i + d;
            if(j < 1 || j > m) continue;
            a[i][j] = 1e9+7;
            int l = K[i][j-1] ? K[i][j-1] : 1;
            int r = K[i+1][j] ? K[i+1][j] : m;
            for(int k=l; k<=r; k++){
                if(a[i][j] > b[i][k] + c[k][j]) a[i][j] = b[i][k] + c[k][j], K[i][j] = k;
            }
        }
    }
}

void small(int data[222][222], int s, int e){
    for(int i=1; i<=m; i++) for(int j=1; j<=m; j++) data[i][j] = 1e9+7;
    for(int i=1; i<=m; i++) data[i][i] = 0;
    int sum[222] = {0}, a[222][222] = {0}, b[222][222] = {0};
    for(int i=s; i<=e+1; i++){
        for(int j=1; j<=m; j++){
            for(int k=1; k<=m; k++){
                a[j][k] = data[j][k];
                if(i != s) a[j][k] += v[i-1][k];
            }
        }
        for(int j=2; j<=m; j++) sum[j] = sum[j-1] + h[i][j-1];
        for(int j=1; j<=m; j++){
            for(int k=j; k<=m; k++){
                b[j][k] = b[k][j] = sum[k] - sum[j];
            }
        }
        merge(data, a, b);
    }
}
Node* build(int s, int e){
    Node *ret = new Node();
    if(e-s < 15){
        small(ret->data, s, e);
        return ret;
    }
    int m = s + e >> 1;
    ret->l = build(s, m);
    ret->r = build(m+1, e);
    merge(ret->data, ret->l->data, ret->r->data);
    return ret;
}

void update(Node *node, int s, int e, int l, int r){
    if(r < s || e < l) return;
    if(e-s < 15){
        small(node->data, s, e);
        return;
    }
    int m = s + e >> 1;
    update(node->l, s, m, l, r);
    update(node->r, m+1, e, l, r);
    merge(node->data, node->l->data, node->r->data);
}

Node *root;
void init(int R, int C, int H[5000][200], int V[5000][200]){
    n = R; m = C;
    for(int i=1; i<=n; i++) for(int j=1; j<m; j++) h[i][j] = H[i-1][j-1];
    for(int i=1; i<n; i++) for(int j=1; j<=m; j++) v[i][j] = V[i-1][j-1];
    root = build(1, n-1);
}

void changeH(int i, int j, int k){
    i++; j++; h[i][j] = k;
    update(root, 1, n-1, i-1, i);
}

void changeV(int i, int j, int k){
    i++; j++; v[i][j] = k;
    update(root, 1, n-1, i, i);
}

int escape(int i, int j){
    i++; j++;
    return root->data[i][j];
}

Compilation message

grader.c: In function 'int main()':
grader.c:15:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
   15 |  int res;
      |      ^~~
wombats.cpp: In function 'Node* build(int, int)':
wombats.cpp:59:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   59 |     int m = s + e >> 1;
      |             ~~^~~
wombats.cpp: In function 'void update(Node*, int, int, int, int)':
wombats.cpp:72:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   72 |     int m = s + e >> 1;
      |             ~~^~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 167 ms 210180 KB Output is correct
2 Correct 161 ms 210052 KB Output is correct
3 Correct 240 ms 212756 KB Output is correct
4 Correct 160 ms 209972 KB Output is correct
5 Correct 166 ms 210012 KB Output is correct
6 Correct 1 ms 972 KB Output is correct
7 Correct 1 ms 972 KB Output is correct
8 Correct 1 ms 972 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1068 KB Output is correct
2 Correct 1 ms 972 KB Output is correct
3 Correct 1 ms 1100 KB Output is correct
4 Correct 1 ms 1456 KB Output is correct
5 Correct 1 ms 1484 KB Output is correct
6 Correct 1 ms 1484 KB Output is correct
7 Correct 1 ms 1456 KB Output is correct
8 Correct 1 ms 1484 KB Output is correct
9 Correct 1 ms 1460 KB Output is correct
10 Correct 1 ms 1484 KB Output is correct
11 Correct 75 ms 3876 KB Output is correct
12 Correct 1 ms 1484 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 199 ms 4292 KB Output is correct
2 Correct 138 ms 4252 KB Output is correct
3 Correct 186 ms 4256 KB Output is correct
4 Correct 182 ms 4236 KB Output is correct
5 Correct 187 ms 4276 KB Output is correct
6 Correct 1 ms 1064 KB Output is correct
7 Correct 1 ms 972 KB Output is correct
8 Correct 1 ms 972 KB Output is correct
9 Correct 691 ms 4244 KB Output is correct
10 Correct 1 ms 1100 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 169 ms 218288 KB Output is correct
2 Correct 168 ms 218284 KB Output is correct
3 Correct 168 ms 218252 KB Output is correct
4 Correct 203 ms 219728 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 196 ms 4244 KB Output is correct
2 Correct 138 ms 4132 KB Output is correct
3 Correct 197 ms 4252 KB Output is correct
4 Correct 180 ms 4172 KB Output is correct
5 Correct 186 ms 4248 KB Output is correct
6 Correct 164 ms 218364 KB Output is correct
7 Correct 174 ms 218316 KB Output is correct
8 Correct 168 ms 218276 KB Output is correct
9 Correct 200 ms 219648 KB Output is correct
10 Correct 204 ms 210124 KB Output is correct
11 Correct 159 ms 209988 KB Output is correct
12 Correct 224 ms 212732 KB Output is correct
13 Correct 162 ms 210072 KB Output is correct
14 Correct 160 ms 210016 KB Output is correct
15 Correct 1 ms 1100 KB Output is correct
16 Correct 1 ms 972 KB Output is correct
17 Correct 1 ms 1044 KB Output is correct
18 Correct 1 ms 1436 KB Output is correct
19 Correct 1 ms 1436 KB Output is correct
20 Correct 1 ms 1444 KB Output is correct
21 Correct 1 ms 1460 KB Output is correct
22 Correct 1 ms 1484 KB Output is correct
23 Correct 1 ms 1456 KB Output is correct
24 Correct 1 ms 1484 KB Output is correct
25 Correct 61 ms 4004 KB Output is correct
26 Correct 1 ms 1456 KB Output is correct
27 Correct 761 ms 4268 KB Output is correct
28 Correct 1577 ms 222484 KB Output is correct
29 Correct 1557 ms 218360 KB Output is correct
30 Correct 1561 ms 219216 KB Output is correct
31 Correct 1511 ms 224188 KB Output is correct
32 Correct 1 ms 1044 KB Output is correct

Subtask #6
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 186 ms 4144 KB Output is correct
2 Correct 136 ms 4236 KB Output is correct
3 Correct 189 ms 4168 KB Output is correct
4 Correct 187 ms 4252 KB Output is correct
5 Correct 183 ms 4172 KB Output is correct
6 Correct 172 ms 218404 KB Output is correct
7 Correct 166 ms 218308 KB Output is correct
8 Correct 166 ms 218312 KB Output is correct
9 Correct 196 ms 219704 KB Output is correct
10 Correct 162 ms 209960 KB Output is correct
11 Correct 158 ms 209988 KB Output is correct
12 Correct 226 ms 212784 KB Output is correct
13 Correct 161 ms 210076 KB Output is correct
14 Correct 176 ms 209960 KB Output is correct
15 Correct 2056 ms 228092 KB Output is correct
16 Correct 6038 ms 229172 KB Output is correct
17 Correct 1 ms 972 KB Output is correct
18 Correct 1 ms 1068 KB Output is correct
19 Correct 1 ms 972 KB Output is correct
20 Correct 1 ms 1484 KB Output is correct
21 Correct 1 ms 1456 KB Output is correct
22 Correct 1 ms 1484 KB Output is correct
23 Correct 1 ms 1476 KB Output is correct
24 Correct 1 ms 1484 KB Output is correct
25 Correct 1 ms 1452 KB Output is correct
26 Correct 1 ms 1484 KB Output is correct
27 Correct 65 ms 3840 KB Output is correct
28 Correct 2 ms 1476 KB Output is correct
29 Correct 728 ms 4244 KB Output is correct
30 Correct 1398 ms 222388 KB Output is correct
31 Correct 4932 ms 226764 KB Output is correct
32 Correct 4926 ms 226656 KB Output is correct
33 Correct 1496 ms 218560 KB Output is correct
34 Correct 5440 ms 222524 KB Output is correct
35 Correct 1524 ms 219216 KB Output is correct
36 Correct 5305 ms 223048 KB Output is correct
37 Correct 1454 ms 224172 KB Output is correct
38 Correct 5148 ms 227292 KB Output is correct
39 Correct 1 ms 1064 KB Output is correct
40 Correct 5495 ms 222916 KB Output is correct