Submission #854968

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
854968	2023-09-29 14:06:57	vjudge1	Nuclearia (CEOI15_nuclearia)	C++17	65 / 100	681 ms	550804 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 inf=1e18;
const ll mod=1e9+7;
ll h,w;
vector<vector<ll>> p1,p2,p3;
vector<ll>a2,pre;
ll cd=0;
void add(ll x,ll y,ll a,ll b)
{
    ll r=(a-1)/b;
    // 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[max(1ll,x-r)][max(1ll,y-r)]+=a-(r+1)*b;
    p1[min(x+r+1,w+1)][max(1ll,y-r)]-=a-(r+1)*b;
    p1[max(1ll,x-r)][min(h+1,y+r+1)]-=a-(r+1)*b;
    p1[min(w+1,x+r+1)][min(h+1,y+r+1)]+=a-(r+1)*b;
    ll k=min({x-1,y-1,r});
    p2[x-k][y-k]+=b;
    if(k!=r&&x<y)
    {
        a2[max(0ll,y-r)]+=b;
 
 
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