#include <bits/stdc++.h> using namespace std; #pragma GCC optimize("Ofast,unroll-loops") #pragma GCC target("sse,sse2,mmx,abm") //#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,fma,tune=native") typedef long long lld; typedef double lf; typedef long double llf; typedef pair<int,int> pii; typedef pair<lld,lld> pll; #define For(i,s,a) for(int i = (int)s; i < (int)a; ++i) #define rpt(s, it) for(auto it = s.begin(); it != s.end(); ++it) #define brpt(s, it) for(auto it = s.rend(); it != s.rbegin(); --it) #define sz size() #define pb push_back #define eb emplace_back #define ff first #define dd second #define mp make_pair #define all(x) (x).begin(), (x).end() #define ZAPS {int t; scanf("%i", &t); while(t--) solve();} #define make_unique(x) (x).erase( unique(all(x)), (x).end()) template<typename Ta, typename Tb> ostream & operator <<(ostream & os, pair<Ta, Tb> x){ return os << x.ff << " " << x.dd; } const int NLIM = 1e3 + 1; char field[2001][2001]; int odl[2001][2001]; queue<pii>q; void push_edge(int x, int y, int kier){ //cout<<x<<" "<<y<<" to "<<kier<<endl; switch(kier){ case 0: if(odl[x - 1][y] > odl[x][y] + 1){ odl[x - 1][y] = odl[x][y] + 1; q.push(mp(x - 1, y)); } break; case 2: if(odl[x + 1][y] > odl[x][y] + 1){ odl[x + 1][y] = odl[x][y] + 1; q.push(mp(x + 1, y)); } break; case 1: if(odl[x][y + 1] > odl[x][y] + 1){ odl[x][y + 1] = odl[x][y] + 1; q.push(mp(x, y + 1)); } break; case 3: if(odl[x][y - 1] > odl[x][y] + 1){ odl[x][y - 1] = odl[x][y] + 1; q.push(mp(x, y - 1)); } break; } } void bfs(int n, int m){ memset(odl, 0x3f3f3f3f, sizeof(odl[0][0]) * 2001 * 2001); q.push({0, 0}); odl[0][0] = 0; while(!q.empty()){ int x = q.front().ff; int y = q.front().dd; // cout<<x<<" "<<y<<" "<<odl[x][y]<<endl; q.pop(); if(x && field[x - 1][y] == '.') push_edge(x, y, 0); if(x < n - 1 && field[x + 1][y] == '.') push_edge(x, y, 2); if(y < m - 1 && field[x][y + 1] == '.') push_edge(x, y, 1); if(y && field[x][y - 1] == '.') push_edge(x, y, 3); } } int32_t main(void){ int n, m, t; scanf("%d%d%d", &n, &m, &t); For(i, 0, n) scanf("%s", field[i]); bfs(n, m); lld ile = 0, minx = 1e18; lld a = odl[n - 1][m - 1]; lld b = a = (a - n - m + 2) >> 1; while(t--){ lld x, y; scanf("%lld%lld", &x, &y); lld cand = (a + n + m - 2) * x + b * y; if(minx > cand) minx = cand, ile = 1; else if(minx == cand) ++ile; } printf("%lld %lld", minx, ile); } /* 5 7 1 ......X X.X..X. ..X.X.X .X.X... .....X. 2 1 */ /* 2 5 4 .X... ...X. 2 1 2 2 1 7 2 1 */
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 | #include <bits/stdc++.h> using namespace std; #pragma GCC optimize("Ofast,unroll-loops") #pragma GCC target("sse,sse2,mmx,abm") //#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,fma,tune=native") typedef long long lld; typedef double lf; typedef long double llf; typedef pair<int,int> pii; typedef pair<lld,lld> pll; #define For(i,s,a) for(int i = (int)s; i < (int)a; ++i) #define rpt(s, it) for(auto it = s.begin(); it != s.end(); ++it) #define brpt(s, it) for(auto it = s.rend(); it != s.rbegin(); --it) #define sz size() #define pb push_back #define eb emplace_back #define ff first #define dd second #define mp make_pair #define all(x) (x).begin(), (x).end() #define ZAPS {int t; scanf("%i", &t); while(t--) solve();} #define make_unique(x) (x).erase( unique(all(x)), (x).end()) template<typename Ta, typename Tb> ostream & operator <<(ostream & os, pair<Ta, Tb> x){ return os << x.ff << " " << x.dd; } const int NLIM = 1e3 + 1; char field[2001][2001]; int odl[2001][2001]; queue<pii>q; void push_edge(int x, int y, int kier){ //cout<<x<<" "<<y<<" to "<<kier<<endl; switch(kier){ case 0: if(odl[x - 1][y] > odl[x][y] + 1){ odl[x - 1][y] = odl[x][y] + 1; q.push(mp(x - 1, y)); } break; case 2: if(odl[x + 1][y] > odl[x][y] + 1){ odl[x + 1][y] = odl[x][y] + 1; q.push(mp(x + 1, y)); } break; case 1: if(odl[x][y + 1] > odl[x][y] + 1){ odl[x][y + 1] = odl[x][y] + 1; q.push(mp(x, y + 1)); } break; case 3: if(odl[x][y - 1] > odl[x][y] + 1){ odl[x][y - 1] = odl[x][y] + 1; q.push(mp(x, y - 1)); } break; } } void bfs(int n, int m){ memset(odl, 0x3f3f3f3f, sizeof(odl[0][0]) * 2001 * 2001); q.push({0, 0}); odl[0][0] = 0; while(!q.empty()){ int x = q.front().ff; int y = q.front().dd; // cout<<x<<" "<<y<<" "<<odl[x][y]<<endl; q.pop(); if(x && field[x - 1][y] == '.') push_edge(x, y, 0); if(x < n - 1 && field[x + 1][y] == '.') push_edge(x, y, 2); if(y < m - 1 && field[x][y + 1] == '.') push_edge(x, y, 1); if(y && field[x][y - 1] == '.') push_edge(x, y, 3); } } int32_t main(void){ int n, m, t; scanf("%d%d%d", &n, &m, &t); For(i, 0, n) scanf("%s", field[i]); bfs(n, m); lld ile = 0, minx = 1e18; lld a = odl[n - 1][m - 1]; lld b = a = (a - n - m + 2) >> 1; while(t--){ lld x, y; scanf("%lld%lld", &x, &y); lld cand = (a + n + m - 2) * x + b * y; if(minx > cand) minx = cand, ile = 1; else if(minx == cand) ++ile; } printf("%lld %lld", minx, ile); } /* 5 7 1 ......X X.X..X. ..X.X.X .X.X... .....X. 2 1 */ /* 2 5 4 .X... ...X. 2 1 2 2 1 7 2 1 */ |