Submission #854814

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
8548142023-09-29 03:11:39vjudge1Nuclearia (CEOI15_nuclearia)C++17
25 / 100
869 ms882488 KiB
#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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