#include<bits/stdc++.h>
#define inf 1000000009
#define linf (1ll<<60)
#define lim 2009
#define mk make_pair
#define sc second
#define ff first
using namespace std;
struct ver{
bool safe;
long long dis_up;
long long dis_down;
};
char s[lim];
int n,m,k;
ver t[lim][lim];
priority_queue<pair<int,pair<int,int> > > q;
int main()
{
scanf("%d%d%d", &n, &m, &k);
t[0][0].safe = false;
t[0][0].dis_down = linf;
t[0][0].dis_up = linf;
for(int i = 0;i<=m+1;++i)
{
t[n+1][i] = t[0][i] = t[0][0];
}
for(int i = 1;i<=n;++i)
{
t[i][0] = t[i][m+1] = t[0][0];
scanf("%s", s);
for(int j = 1;j<=m;++j)
{
if(s[j-1] == '.')
{
t[i][j].safe = true;
}
else
{
t[i][j].safe = false;
}
t[i][j].dis_up = linf;
t[i][j].dis_down = linf;
}
}
t[1][1].dis_up = 0;
t[1][1].dis_down = 0;
q.push(mk(0,mk(1,1)));
while(!q.empty())
{
pair<int,pair<int,int> > pom = q.top();
q.pop();
int i = pom.sc.ff;
int j = pom.sc.sc;
if(-pom.ff<=t[i][j].dis_up+t[i][j].dis_down)
{
int odl = t[i][j].dis_up+t[i][j].dis_down+1;
if(t[i+1][j].safe)
{
if(t[i+1][j].dis_up+t[i+1][j].dis_down > odl)
{
t[i+1][j].dis_down = t[i][j].dis_down;
t[i+1][j].dis_up = t[i][j].dis_up+1;
q.push(mk(-odl,mk(i+1,j)));
}
}
if(t[i][j+1].safe)
{
if(t[i][j+1].dis_up+t[i][j+1].dis_down > odl)
{
t[i][j+1].dis_down = t[i][j].dis_down;
t[i][j+1].dis_up = t[i][j].dis_up+1;
q.push(mk(-odl,mk(i,j+1)));
}
}
if(t[i-1][j].safe)
{
if(t[i-1][j].dis_up+t[i-1][j].dis_down > odl)
{
t[i-1][j].dis_down = t[i][j].dis_down+1;
t[i-1][j].dis_up = t[i][j].dis_up;
q.push(mk(-odl,mk(i-1,j)));
}
}
if(t[i][j-1].safe)
{
if(t[i][j-1].dis_up+t[i][j-1].dis_down > odl)
{
t[i][j-1].dis_down = t[i][j].dis_down+1;
t[i][j-1].dis_up = t[i][j].dis_up;
q.push(mk(-odl,mk(i,j-1)));
}
}
}
}
long long sm = linf;
int wyn = 0;
for(int i = 0;i<k;++i)
{
int a,b;
scanf("%d%d", &a, &b);
if(t[n][m].dis_up*a+t[n][m].dis_down*b<sm)
{
sm = t[n][m].dis_up*a+t[n][m].dis_down*b;
wyn = 1;
}
else
if(t[n][m].dis_up*a+t[n][m].dis_down*b == sm)
{
++wyn;
}
}
printf("%lld %d\n", sm, wyn);
}
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 | #include<bits/stdc++.h> #define inf 1000000009 #define linf (1ll<<60) #define lim 2009 #define mk make_pair #define sc second #define ff first using namespace std; struct ver{ bool safe; long long dis_up; long long dis_down; }; char s[lim]; int n,m,k; ver t[lim][lim]; priority_queue<pair<int,pair<int,int> > > q; int main() { scanf("%d%d%d", &n, &m, &k); t[0][0].safe = false; t[0][0].dis_down = linf; t[0][0].dis_up = linf; for(int i = 0;i<=m+1;++i) { t[n+1][i] = t[0][i] = t[0][0]; } for(int i = 1;i<=n;++i) { t[i][0] = t[i][m+1] = t[0][0]; scanf("%s", s); for(int j = 1;j<=m;++j) { if(s[j-1] == '.') { t[i][j].safe = true; } else { t[i][j].safe = false; } t[i][j].dis_up = linf; t[i][j].dis_down = linf; } } t[1][1].dis_up = 0; t[1][1].dis_down = 0; q.push(mk(0,mk(1,1))); while(!q.empty()) { pair<int,pair<int,int> > pom = q.top(); q.pop(); int i = pom.sc.ff; int j = pom.sc.sc; if(-pom.ff<=t[i][j].dis_up+t[i][j].dis_down) { int odl = t[i][j].dis_up+t[i][j].dis_down+1; if(t[i+1][j].safe) { if(t[i+1][j].dis_up+t[i+1][j].dis_down > odl) { t[i+1][j].dis_down = t[i][j].dis_down; t[i+1][j].dis_up = t[i][j].dis_up+1; q.push(mk(-odl,mk(i+1,j))); } } if(t[i][j+1].safe) { if(t[i][j+1].dis_up+t[i][j+1].dis_down > odl) { t[i][j+1].dis_down = t[i][j].dis_down; t[i][j+1].dis_up = t[i][j].dis_up+1; q.push(mk(-odl,mk(i,j+1))); } } if(t[i-1][j].safe) { if(t[i-1][j].dis_up+t[i-1][j].dis_down > odl) { t[i-1][j].dis_down = t[i][j].dis_down+1; t[i-1][j].dis_up = t[i][j].dis_up; q.push(mk(-odl,mk(i-1,j))); } } if(t[i][j-1].safe) { if(t[i][j-1].dis_up+t[i][j-1].dis_down > odl) { t[i][j-1].dis_down = t[i][j].dis_down+1; t[i][j-1].dis_up = t[i][j].dis_up; q.push(mk(-odl,mk(i,j-1))); } } } } long long sm = linf; int wyn = 0; for(int i = 0;i<k;++i) { int a,b; scanf("%d%d", &a, &b); if(t[n][m].dis_up*a+t[n][m].dis_down*b<sm) { sm = t[n][m].dis_up*a+t[n][m].dis_down*b; wyn = 1; } else if(t[n][m].dis_up*a+t[n][m].dis_down*b == sm) { ++wyn; } } printf("%lld %d\n", sm, wyn); } |
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