//Krzysztof Kleiner
#include<iostream>
#include<cstdio>
#include<algorithm>
#define FOR(i, b, n) for ( int (i) = b; (i) < (n); (i)++)
#define FORR(i, b, n) for ( (i) = b; (i) < (n); (i)++)
#define REP(i, n) for ( int (i) = 0; (i) < (n); (i)++)
#define SC(n) scanf("%d", &(n))
#define SC2(n, m) scanf("%d%d", &(n), &(m))
#define SCLL(n) scanf("%lld", &(n))
#define PRT(n) printf("%d ", (n))
#define PRTLL(n) printf("%lld ", (n))
#define NXL printf("\n")
typedef long long LL;
typedef unsigned long long ULL;
using namespace std;
#include<set>
#include<map>
#include<vector>
#include<stack>
#include<cstring>
#include "message.h"
const int MANY = 100010; ////////////////////////////////////
/********
**
**
**/
struct str
{
int p, sh;
str(int p, int sh) : p(p), sh(sh){}
str(){}
};
bool operator < (str x, str y)
{
if(x.p != y.p) return x.p < y.p;
return x.sh < y.sh;
}
str a[MANY][2];
char s[MANY], t[MANY];
int main()
{
int n, m;
SC2(n, m);
scanf("%s", s+1);
scanf("%s", t+1);
int nodes = NumberOfNodes();
int me = MyNodeId();
int mstep = m/1000 + 1;
int nstep = n/nodes + 1;
int nstart = 1 + nstep*me;
if(nstart > n)
return 0;
int nstop = nstart + nstep; // 1 after
nstop = min(nstop, n+1);
FOR(i, max(nstart - 1, 0), nstop)
{
a[i][0].p = i;
a[i][0].sh = 0;
}
FOR(j, 1, m+1)
{
if(me == 0)
{
a[0][j&1].p = j;
a[0][j&1].sh = 0;
}
else
{
if((j-1) % mstep == 0)
Receive(me - 1);
a[nstart-1][j&1].p = GetInt(me - 1);
a[nstart-1][j&1].sh = GetInt(me - 1);
}
FOR(i, nstart, nstop)
{
str ch;
if(s[i] != t[j])
{
ch.p = a[i-1][(j+1)&1].p + 1;
ch.sh = a[i-1][(j+1)&1].sh + (s[i] < t[j]) ;
}
else
{
ch.p = a[i-1][(j+1)&1].p;
ch.sh = a[i-1][(j+1)&1].sh;
}
str dl ( a[i-1][j&1].p + 1, a[i-1][j&1].sh);
str ad ( a[i][(j+1)&1].p + 1, a[i][(j+1)&1].sh);
a[i][j&1] = min(ch, min(dl, ad));
// printf("node %d liczy %d,%d: %d %d\n", me, i, j, a[i][j].p, a[i][j].sh);
}
if(nstop != n+1)
{
PutInt(me + 1, a[nstop-1][j&1].p);
PutInt(me + 1, a[nstop-1][j&1].sh);
}
if((nstop != n+1) && (j % mstep == 0 || j == m))
{
Send(me + 1);
}
}
if(nstop == n+1)
{
PRT(a[n][m&1].p);
PRT(a[n][m&1].sh);
NXL;
}
}
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 | //Krzysztof Kleiner #include<iostream> #include<cstdio> #include<algorithm> #define FOR(i, b, n) for ( int (i) = b; (i) < (n); (i)++) #define FORR(i, b, n) for ( (i) = b; (i) < (n); (i)++) #define REP(i, n) for ( int (i) = 0; (i) < (n); (i)++) #define SC(n) scanf("%d", &(n)) #define SC2(n, m) scanf("%d%d", &(n), &(m)) #define SCLL(n) scanf("%lld", &(n)) #define PRT(n) printf("%d ", (n)) #define PRTLL(n) printf("%lld ", (n)) #define NXL printf("\n") typedef long long LL; typedef unsigned long long ULL; using namespace std; #include<set> #include<map> #include<vector> #include<stack> #include<cstring> #include "message.h" const int MANY = 100010; //////////////////////////////////// /******** ** ** **/ struct str { int p, sh; str(int p, int sh) : p(p), sh(sh){} str(){} }; bool operator < (str x, str y) { if(x.p != y.p) return x.p < y.p; return x.sh < y.sh; } str a[MANY][2]; char s[MANY], t[MANY]; int main() { int n, m; SC2(n, m); scanf("%s", s+1); scanf("%s", t+1); int nodes = NumberOfNodes(); int me = MyNodeId(); int mstep = m/1000 + 1; int nstep = n/nodes + 1; int nstart = 1 + nstep*me; if(nstart > n) return 0; int nstop = nstart + nstep; // 1 after nstop = min(nstop, n+1); FOR(i, max(nstart - 1, 0), nstop) { a[i][0].p = i; a[i][0].sh = 0; } FOR(j, 1, m+1) { if(me == 0) { a[0][j&1].p = j; a[0][j&1].sh = 0; } else { if((j-1) % mstep == 0) Receive(me - 1); a[nstart-1][j&1].p = GetInt(me - 1); a[nstart-1][j&1].sh = GetInt(me - 1); } FOR(i, nstart, nstop) { str ch; if(s[i] != t[j]) { ch.p = a[i-1][(j+1)&1].p + 1; ch.sh = a[i-1][(j+1)&1].sh + (s[i] < t[j]) ; } else { ch.p = a[i-1][(j+1)&1].p; ch.sh = a[i-1][(j+1)&1].sh; } str dl ( a[i-1][j&1].p + 1, a[i-1][j&1].sh); str ad ( a[i][(j+1)&1].p + 1, a[i][(j+1)&1].sh); a[i][j&1] = min(ch, min(dl, ad)); // printf("node %d liczy %d,%d: %d %d\n", me, i, j, a[i][j].p, a[i][j].sh); } if(nstop != n+1) { PutInt(me + 1, a[nstop-1][j&1].p); PutInt(me + 1, a[nstop-1][j&1].sh); } if((nstop != n+1) && (j % mstep == 0 || j == m)) { Send(me + 1); } } if(nstop == n+1) { PRT(a[n][m&1].p); PRT(a[n][m&1].sh); NXL; } } |
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