Submission #854814

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
854814	2023-09-29 03:11:39	vjudge1	Nuclearia (CEOI15_nuclearia)	C++17	25 / 100	869 ms	882488 KiB

nuclearia

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#include<bits/stdc++.h>
#define pb push_back
#define pli pair<int,int>
#define fi first
#define se second
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL);
using namespace std;
using ll=long long;
const ll maxN=2e5;
const ll inf=1e18;
const ll mod=1e9+7;
ll h,w;
vector<vector<ll>> p1,p2,p3;
void add(ll x,ll y,ll a,ll b)
{
    ll r=(a-1)/b;
    if(x+r>w||x-r<1||y+r>h||y-r<1) return;
    // p1 p2 p3
    // p1 la prefix sum cho a
    // p2 la prefix sum cho b cheo 1
    // p3 la prefix sum cho b cheo 2
    p1[x-r][y-r]+=a-(r+1)*b;
    p1[x+r+1][y-r]-=a-(r+1)*b;
    p1[x-r][y+r+1]-=a-(r+1)*b;
    p1[x+r+1][y+r+1]+=a-(r+1)*b;
    p2[x-r][y-r]+=b;
    p2[x+r+2][y+r+2]-=b;
    p3[x-r][y+r+1]-=b;
 
 
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