Submission #64942

#	Time	Username	Problem	Language	Result	Execution time	Memory
64942		gs18115	물탱크 (KOI18_watertank)	C++14	0 / 100	170 ms	16024 KiB

watertank

#include<iostream>
#include<vector>
#include<queue>
#include<algorithm>
using namespace std;
typedef long long LL;
const LL INF=1e18;
const LL SC=1002;
const LL MAXN=1005;
pair<pair<LL,LL>,LL>adj[MAXN][MAXN][5];
LL adjN[MAXN][MAXN];
LL dist[MAXN][MAXN];
bool inQ[MAXN][MAXN];
LL N,M,i,j,H,a,s;
void makeedge(LL i1,LL j1,LL i2,LL j2,LL w)
{
    adj[i1][j1][adjN[i1][j1]++]=make_pair(make_pair(i2,j2),w);
    adj[i2][j2][adjN[i2][j2]++]=make_pair(make_pair(i1,j1),w);
    return;
}
void spfa()
{
    queue<pair<LL,LL> >Q;
    LL i;
    for(i=0;i<MAXN;i++)
        fill(dist[i],dist[i]+MAXN,INF);
    for(i=0;i<MAXN;i++)
        fill(inQ[i],inQ[i]+MAXN,false);
    dist[SC][SC]=0;
    Q.push(make_pair(SC,SC));
    while(!Q.empty())
    {
        LL hi=Q.front().first;
        LL hj=Q.front().second;
        Q.pop();
        inQ[hi][hj]=false;
        for(i=0;i<adjN[hi][hj];i++)
        {
            LL ti=adj[hi][hj][i].first.first;
            LL tj=adj[hi][hj][i].first.second;
            LL wei=adj[hi][hj][i].second;
            if(dist[ti][tj]>max(wei,dist[hi][hj]))
            {
                dist[ti][tj]=max(wei,dist[hi][hj]);
                if(!inQ[ti][tj])
                {
                    inQ[ti][tj]=true;
                    Q.push(make_pair(ti,tj));
                }
            }
        }
    }
    return;
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    cin>>N>>M>>H;
    for(i=0;i<=N;i++)
    {
        for(j=0;j<M;j++)
        {
            cin>>a;
            if(a==-1)
                continue;
            else if(i==0)
                makeedge(i,j,SC,SC,a);
            else if(i==N)
                makeedge(i-1,j,SC,SC,a);
            else
                makeedge(i,j,i-1,j,a);
        }
    }
    for(i=0;i<N;i++)
    {
        for(j=0;j<=M;j++)
        {
            cin>>a;
            if(a==-1)
                continue;
            else if(j==0)
                makeedge(i,j,SC,SC,a);
            else if(j==M)
                makeedge(i,j-1,SC,SC,a);
            else
                makeedge(i,j,i,j-1,a);
        }
    }
    spfa();
    for(i=0;i<N;i++)
        for(j=0;j<M;j++)
            s+=dist[i][j];
    cout<<s<<endl;
    return 0;
}

• Subtask 1: 0 / 6
• Subtask 2: 0 / 18
• Subtask 3: 0 / 15
• Subtask 4: 0 / 21
• Subtask 5: 0 / 40