| # | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 539335 | 2022-03-18T17:59:37 Z | mars4 | Nafta (COI15_nafta) | C++17 | 1 ms | 980 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;
#define ff first
#define ss second
#define ll int64_t
#define ld long double
#define nl cout<<"\n"
#define i128 __int128_t
#define all(v) v.begin(),v.end()
#define mset(a,v) memset((a),(v),sizeof(a))
#define forn(i,a,b) for(int64_t i=int64_t(a);i<int64_t(b);++i)
#define forb(i,a,b) for(int64_t i=int64_t(a);i>=int64_t(b);--i)
#define fastio() ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define mod 1'000'000'007
#define mod2 998'244'353
#define inf 1'000'000'000'000'007
#define pi 3.14159265358979323846
template<class key,class cmp=std::less<key>>
using ordered_set=tree<key,null_type,cmp,rb_tree_tag,tree_order_statistics_node_update>;
template<class L,class R> ostream& operator<<(ostream& out,pair<L,R> &p) {return out<<"("<<p.ff<<", "<<p.ss<<")";}
template<class T> ostream& operator<<(ostream& out,vector<T> &v) {out<<"[";for(auto it=v.begin();it!=v.end();++it){if(it!=v.begin())out<<", ";out<<*it;}return out<<"]";}
template<class T> ostream& operator<<(ostream& out,deque<T> &v) {out<<"[";for(auto it=v.begin();it!=v.end();++it){if(it!=v.begin())out<<", ";out<<*it;}return out<<"]";}
template<class T> ostream& operator<<(ostream& out,set<T> &s) {out<<"{";for(auto it=s.begin();it!=s.end();++it){if(it!=s.begin())out<<", ";out<<*it;}return out<<"}";}
template<class T> ostream& operator<<(ostream& out,ordered_set<T> &s) {out<<"{";for(auto it=s.begin();it!=s.end();++it){if(it!=s.begin())out<<", ";out<<*it;}return out<<"}";}
template<class L,class R> ostream& operator<<(ostream& out,map<L,R> &m) {out<<"{";for(auto it=m.begin();it!=m.end();++it){if(it!=m.begin())out<<", ";out<<*it;}return out<<"}";}
void dbg_out() {cerr<<"]\n";}
template<typename Head,typename... Tail>
void dbg_out(Head H,Tail... T) {cerr<<H;if(sizeof...(Tail))cerr<<", ";dbg_out(T...);}
#ifdef LOCAL
#define dbg(...) cerr<<"["<<#__VA_ARGS__<<"] = [",dbg_out(__VA_ARGS__)
#else
#define dbg(...)
#endif
//---------------------------------mars4---------------------------------
ll cnt[2000][2001];
ll pre[2000][2000];
ll dp[2000][2000];
void calc(ll l,ll r,ll optL,ll optR,ll level)
{
if(l>r)
{
return;
}
ll mid=(l+r)>>1;
pair<ll,ll> best={-1,-1};
forn(i,optL,min(mid,optR)+1)
{
ll val=(i?dp[level-1][i-1]+cnt[i-1][mid]:0);
if(val>best.ff)
{
best={val,i};
}
}
dp[level][mid]=best.ff;
ll opt=best.ss;
calc(l,mid-1,optL,opt,level);
calc(mid+1,r,opt,optR,level);
}
int main()
{
fastio();
ll z,n,m,t,k,i,j,l,d,h,r;
cin>>n>>m;
vector<string> a(n);
for(auto &i:a)
{
cin>>i;
}
vector<ll> dx={1,0,0,-1};
vector<ll> dy={0,1,-1,0};
vector<ll> val(n*m);
vector<vector<ll>> mark(n,vector<ll>(m,-1));
ll id=0;
forn(i,0,n)
{
forn(j,0,m)
{
if(a[i][j]!='.' and mark[i][j]==-1)
{
ll maxc=j;
queue<pair<ll,ll>> q;
q.push({i,j});
mark[i][j]=id;
while(!q.empty())
{
auto [r,c]=q.front();
q.pop();
maxc=max(maxc,c);
val[id]+=(a[r][c]-'0');
forn(k,0,4)
{
ll nr=r+dx[k];
ll nc=c+dy[k];
if(nr>=0 and nr<n and nc>=0 and nc<m and a[nr][nc]!='.' and mark[nr][nc]==-1)
{
q.push({nr,nc});
mark[nr][nc]=id;
}
}
}
forn(k,j,maxc+1)
{
cnt[k][k]+=val[id];
pre[k][k+1]-=val[id];
pre[k][maxc+1]+=val[id];
}
id++;
}
}
}
forn(i,0,m)
{
ll ex=0;
forn(j,i+1,m)
{
ex+=pre[i][j];
cnt[i][j]=cnt[j][j]+ex;
}
}
forn(i,0,m)
{
dp[0][i]=cnt[i][i];
}
vector<ll> ans;
ans.push_back(*max_element(dp[0],dp[0]+m));
forn(i,1,m)
{
calc(i,m-1,i,m-1,i);
ans.push_back(*max_element(dp[i],dp[i]+m));
}
for(ll i:ans)
{
cout<<i<<"\n";
}
cerr<<"\nTime elapsed: "<<1000*clock()/CLOCKS_PER_SEC<<"ms\n";
return 0;
}
Compilation message
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Incorrect | 1 ms | 980 KB | Output isn't correct |
| 2 | Halted | 0 ms | 0 KB | - |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Incorrect | 1 ms | 980 KB | Output isn't correct |
| 2 | Halted | 0 ms | 0 KB | - |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Incorrect | 1 ms | 980 KB | Output isn't correct |
| 2 | Halted | 0 ms | 0 KB | - |