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[129] | 1 | //Author Antonio-Gabriel Sturzu |
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| 2 | |
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| 3 | #include<stdio.h> |
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| 4 | #include<omp.h> |
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| 5 | #define lim 100001 |
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| 6 | |
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| 7 | |
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| 8 | int main() |
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| 9 | { |
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| 10 | int m[1000][1000],n,i,j,k,chunk=1; |
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| 11 | double start,stop; |
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| 12 | FILE *f=fopen("royfloyd.in","r"); |
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| 13 | |
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| 14 | fscanf(f,"%i",&n); |
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| 15 | for(i=0;i<n;i++) |
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| 16 | for(j=0;j<n;j++) |
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| 17 | { |
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| 18 | fscanf(f,"%i",&m[i][j]); |
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| 19 | if(i!=j && m[i][j]==0) |
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| 20 | m[i][j]=lim; |
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| 21 | } |
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| 22 | fclose(f); |
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| 23 | |
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| 24 | start=omp_get_wtime(); |
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| 25 | for(k=0;k<n;k++) |
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| 26 | { |
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| 27 | #pragma omp parallel shared(m,k) private(i,j) |
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| 28 | { |
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| 29 | #pragma omp for schedule(static) |
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| 30 | for(i=0;i<n;i++) |
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| 31 | for(j=0;j<n;j++) |
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| 32 | if(m[i][k]+m[k][j]<m[i][j]) |
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| 33 | m[i][j]=m[i][k]+m[k][j]; |
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| 34 | } |
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| 35 | } |
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| 36 | stop=omp_get_wtime(); |
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| 37 | printf("Au trecut %f secunde\n",stop-start); |
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| 38 | f=fopen("royfloyd.out","w"); |
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| 39 | for(i=0;i<n;i++) |
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| 40 | { |
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| 41 | for(j=0;j<n-1;j++) |
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| 42 | { |
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| 43 | if(m[i][j]==lim) |
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| 44 | m[i][j]=0; |
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| 45 | fprintf(f,"%i ",m[i][j]); |
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| 46 | } |
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| 47 | if(m[i][n-1]==lim) |
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| 48 | m[i][n-1]=0; |
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| 49 | fprintf(f,"%i\n",m[i][n-1]); |
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| 50 | } |
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| 51 | fclose(f); |
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| 52 | return 0; |
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| 53 | } |
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