Submission #1189431

#TimeUsernameProblemLanguageResultExecution timeMemory
1189431mychecksedadNetrpeljivost (COI23_netrpeljivost)C++20
0 / 100
1 ms576 KiB
/* Author : Mychecksdead */ #pragma GCC optimize("unroll-loops,O3") #pragma GCC target("avx,avx2") #include<bits/stdc++.h> using namespace std; #define ll long long int #define MOD (1000000000+7) #define MOD1 (998244353) #define pb push_back #define all(x) x.begin(), x.end() #define en cout << '\n' #define ff first #define ss second #define pii pair<int,int> #define vi vector<int> const int N = 3000+100, M = 1e5+10, K = 52, MX = 30; const ll INF = 1e18; int n; ll c[N][N]; int op = 0; ll dp[N][N], pd[N][N]; array<ll, 4> pos[N*5]; void f(int l, int r, int v){ if(l == r){ dp[l][l] = 0; pos[v] = {l, l, l, l}; return; } int mid = l+r>>1; f(l, mid, v<<1); f(mid+1, r, v<<1|1); const int R0 = pos[v<<1|1][0], R1 = pos[v<<1|1][1], R2 = pos[v<<1|1][2], R3 = pos[v<<1|1][3]; const int L0 = pos[v<<1][0], L1 = pos[v<<1][1], L2 = pos[v<<1][2], L3 = pos[v<<1][3]; for(int x = l; x <= mid; ++x){ for(int R = R0; R <= R1; ++R){ for(int f = R2; f <= R3; ++f){ pd[x][R] = min(pd[x][R], c[x][f] + dp[f][R]); pd[x][f] = min(pd[x][f], c[x][R] + dp[R][f]); } } } for(int x = L0; x <= L1; ++x){ for(int y = L2; y <= L3; ++y){ for(int X = mid + 1; X <= r; ++X){ dp[x][X] = min(dp[x][X], dp[x][y] + pd[y][X]); dp[y][X] = min(dp[y][X], dp[y][x] + pd[x][X]); } } } for(int x = l; x <= mid; ++x) for(int y = mid + 1; y <= r; ++y) dp[y][x] = dp[x][y]; pos[v] = {l, mid, mid + 1, r}; } void solve(){ cin >> n; for(int i = 1; i <= n; ++i){ for(int j = 1; j <= n; ++j) cin >> c[i][j]; } for(int i = 1; i <= n; ++i){ for(int j = 1; j <= n; ++j) dp[i][j] = pd[i][j] = INF; } f(1, n, 1); ll ans = INF; for(int rep = 0; rep < 2; ++rep){ for(int i = pos[1][0]; i <= pos[1][1]; ++i){ for(int j = pos[1][2]; j <= pos[1][3]; ++j){ ans = min(ans, dp[i][j]); } } swap(pos[1][0], pos[1][2]); swap(pos[1][1], pos[1][3]); } cout << ans << ' ' << op; } int main(){ cin.tie(0); ios::sync_with_stdio(0); int tt = 1, aa; // freopen("in.txt", "r", stdin); // freopen("out.txt", "w", stdout); while(tt--){ solve(); en; } cerr<<"time taken : "<<(float)clock()/CLOCKS_PER_SEC<<" seconds\n"; return 0; }
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