oj.uz

Submission #1010955

# Submission time Handle Problem Language Result Execution time Memory
1010955 2024-06-29T15:12:06 Z GrindMachine Raisins (IOI09_raisins) C++17
100 / 100
 401 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 j = l2; j < r2; ++j){
        amin(ans,go(l1,r1,l2,j)+go(l1,r1,j+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 15 ms 36184 KB Output is correct
2 Correct 15 ms 36188 KB Output is correct
3 Correct 15 ms 36192 KB Output is correct
4 Correct 14 ms 36192 KB Output is correct
5 Correct 19 ms 36188 KB Output is correct
6 Correct 20 ms 36184 KB Output is correct
7 Correct 14 ms 36188 KB Output is correct
8 Correct 18 ms 36200 KB Output is correct
9 Correct 37 ms 36188 KB Output is correct
10 Correct 33 ms 36192 KB Output is correct
11 Correct 29 ms 36272 KB Output is correct
12 Correct 60 ms 36280 KB Output is correct
13 Correct 75 ms 36188 KB Output is correct
14 Correct 34 ms 36272 KB Output is correct
15 Correct 101 ms 36440 KB Output is correct
16 Correct 25 ms 36184 KB Output is correct
17 Correct 46 ms 36184 KB Output is correct
18 Correct 227 ms 36188 KB Output is correct
19 Correct 324 ms 36188 KB Output is correct
20 Correct 401 ms 36188 KB Output is correct