oj.uz

Submission #1010952

# Submission time Handle Problem Language Result Execution time Memory
1010952 2024-06-29T15:11:01 Z GrindMachine Raisins (IOI09_raisins) C++17
100 / 100
 394 ms 36440 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

template<typename T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long int ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define pb push_back
#define endl '\n'
#define sz(a) (int)a.size()
#define setbits(x) __builtin_popcountll(x)
#define ff first
#define ss second
#define conts continue
#define ceil2(x,y) ((x+y-1)/(y))
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define yes cout << "Yes" << endl
#define no cout << "No" << endl

#define rep(i,n) for(int i = 0; i < n; ++i)
#define rep1(i,n) for(int i = 1; i <= n; ++i)
#define rev(i,s,e) for(int i = s; i >= e; --i)
#define trav(i,a) for(auto &i : a)

template<typename T>
void amin(T &a, T b) {
    a = min(a,b);
}

template<typename T>
void amax(T &a, T b) {
    a = max(a,b);
}

#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif

/*



*/

const int MOD = 1e9 + 7;
const int N = 50 + 5;
const int inf1 = int(1e9) + 5;
const ll inf2 = ll(1e18) + 5;

int a[N][N], p[N][N];
int dp[N][N][N][N];
int n,m;

int f(int r1, int c1, int r2, int c2){
    return p[r2][c2]-p[r1-1][c2]-p[r2][c1-1]+p[r1-1][c1-1];
}

int go(int l1, int r1, int l2, int r2){
    if(l1 > r1 or l2 > r2) return 0;
    int cost = f(l1,l2,r1,r2);
    if(l1 == r1 and l2 == r2) return 0;
    if(dp[l1][r1][l2][r2] != -1) return dp[l1][r1][l2][r2];

    int ans = inf1;
    for(int i = l1; i < r1; ++i){
        amin(ans,go(l1,i,l2,r2)+go(i+1,r1,l2,r2));
    }
    for(int i = l2; i < r2; ++i){
        amin(ans,go(l1,r1,l2,i)+go(l1,r1,i+1,r2));
    }

    ans += cost;
    return dp[l1][r1][l2][r2] = ans;
}

void solve(int test_case)
{
    cin >> n >> m;
    rep1(i,n) rep1(j,m) cin >> a[i][j];
    rep1(i,n) rep1(j,m) p[i][j] = p[i-1][j]+p[i][j-1]-p[i-1][j-1]+a[i][j];
    memset(dp,-1,sizeof dp);
    int ans = go(1,n,1,m);
    cout << ans << endl;
}

int main()
{
    fastio;

    int t = 1;
    // cin >> t;

    rep1(i, t) {
        solve(i);
    }

    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 36192 KB Output is correct
2 Correct 16 ms 36192 KB Output is correct
3 Correct 15 ms 36188 KB Output is correct
4 Correct 14 ms 36188 KB Output is correct
5 Correct 15 ms 36264 KB Output is correct
6 Correct 15 ms 36188 KB Output is correct
7 Correct 15 ms 36192 KB Output is correct
8 Correct 19 ms 36260 KB Output is correct
9 Correct 23 ms 36188 KB Output is correct
10 Correct 29 ms 36188 KB Output is correct
11 Correct 25 ms 36192 KB Output is correct
12 Correct 53 ms 36188 KB Output is correct
13 Correct 80 ms 36440 KB Output is correct
14 Correct 32 ms 36192 KB Output is correct
15 Correct 95 ms 36184 KB Output is correct
16 Correct 32 ms 36044 KB Output is correct
17 Correct 47 ms 36188 KB Output is correct
18 Correct 213 ms 36184 KB Output is correct
19 Correct 393 ms 36196 KB Output is correct
20 Correct 394 ms 36288 KB Output is correct