제출 #684847

#제출 시각아이디문제언어결과실행 시간메모리
684847sudheerays123건포도 (IOI09_raisins)C++17
100 / 100
221 ms72064 KiB
#include<bits/stdc++.h> using namespace std; #define fast ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); #define ll long long int const ll N = 50+5 , INF = 1e18 , MOD = 1e9+7; vector<vector<ll>> grid(N,vector<ll>(N)) , presum(N,vector<ll>(N)); ll dp[N][N][N][N]; ll go(ll ri , ll re , ll ci , ll ce){ if(ri == re && ci == ce) return 0; if(dp[ri][re][ci][ce] != -1) return dp[ri][re][ci][ce]; ll ans = INF; ll cost = presum[re][ce]-presum[ri-1][ce]-presum[re][ci-1]+presum[ri-1][ci-1]; for(ll i = ri; i < re; i++) ans = min(ans,cost+go(ri,i,ci,ce)+go(i+1,re,ci,ce)); for(ll j = ci; j < ce; j++) ans = min(ans,cost+go(ri,re,ci,j)+go(ri,re,j+1,ce)); return dp[ri][re][ci][ce] = ans; } void solve(){ ll n,m; cin >> n >> m; for(ll i = 1; i <= n; i++){ for(ll j = 1; j <= m; j++){ cin >> grid[i][j]; presum[i][j] = presum[i-1][j]+presum[i][j-1]-presum[i-1][j-1]+grid[i][j]; } } memset(dp,-1,sizeof dp); cout << go(1,n,1,m); } int main(){ fast; ll tc = 1; // cin >> tc; while(tc--) solve(); return 0; }
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