oj.uz

Submission #542948

# Submission time Handle Problem Language Result Execution time Memory
542948 2022-03-28T14:00:51 Z Sho10 Raisins (IOI09_raisins) C++17
100 / 100
 882 ms 61060 KB 
#include <bits/stdc++.h> //Andrei Alexandru a.k.a Sho
using ll=long long;
using ld=long double;
int const INF=1000000005;
ll const LINF=1000000000000000005;
ll const mod=1000000007;
ld const PI=3.14159265359;
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define endl '\n'
#define CODE_START  ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
ll n,m,dp[55][55][55][55],a[55][55],viz[55][55][55][55];
void solve(ll xl,ll xr,ll yl,ll yr){
    if(xl>xr){
        return;
    }
    if(yl>yr){
        return;
    }
if(xl==xr&&yl==yr){
    dp[xl][xr][yl][yr]=0;
    return;
}
if(viz[xl][xr][yl][yr]==1){
    return;
}
ll sum=0;
for(ll i=xl;i<=xr;i++)
{
    for(ll j=yl;j<=yr;j++)
    {
        sum+=a[i][j];
    }
}
for(ll i=xl+1;i<=xr;i++)
{
    solve(xl,i-1,yl,yr);
    solve(i,xr,yl,yr);
dp[xl][xr][yl][yr]=min(dp[xl][xr][yl][yr],dp[xl][i-1][yl][yr]+dp[i][xr][yl][yr]);
}
for(ll i=yl+1;i<=yr;i++)
{
    solve(xl,xr,yl,i-1);
    solve(xl,xr,i,yr);
    dp[xl][xr][yl][yr]=min(dp[xl][xr][yl][yr],dp[xl][xr][yl][i-1]+dp[xl][xr][i][yr]);
}
dp[xl][xr][yl][yr]+=sum;
viz[xl][xr][yl][yr]=1;
}
int32_t main(){
CODE_START;
#ifdef LOCAL
    ifstream cin("input.txt");
#endif
cin>>n>>m;
for(ll i=1;i<=n;i++)
{
    for(ll j=1;j<=m;j++)
    {
        cin>>a[i][j];
    }
}
for(ll i=1;i<=n;i++)
{
    for(ll j=1;j<=m;j++)
    {
        for(ll i1=i;i1<=n;i1++)
            for(ll j1=j;j1<=m;j1++)
        {
            dp[i][i1][j][j1]=LINF;
        }
    }
}
solve(1,n,1,m);
cout<<dp[1][n][1][m]<<endl;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 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 724 KB Output is correct
6 Correct 1 ms 1236 KB Output is correct
7 Correct 2 ms 2004 KB Output is correct
8 Correct 9 ms 5012 KB Output is correct
9 Correct 16 ms 8288 KB Output is correct
10 Correct 29 ms 9784 KB Output is correct
11 Correct 21 ms 7204 KB Output is correct
12 Correct 81 ms 18576 KB Output is correct
13 Correct 156 ms 24172 KB Output is correct
14 Correct 33 ms 8912 KB Output is correct
15 Correct 197 ms 27652 KB Output is correct
16 Correct 21 ms 13608 KB Output is correct
17 Correct 82 ms 23492 KB Output is correct
18 Correct 473 ms 49060 KB Output is correct
19 Correct 690 ms 56236 KB Output is correct
20 Correct 882 ms 61060 KB Output is correct