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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<string.h> |
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| 5 | #include<time.h> |
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| 6 | #include<stdlib.h> |
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| 7 | #define inf 1001 |
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| 8 | |
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| 9 | |
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| 10 | int main() |
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| 11 | { |
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| 12 | int n,cost=0,prev[200001],key[200001],i,min=0,imin=0,**mat,j; |
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| 13 | char viz[200001]; |
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| 14 | clock_t time1,time2; |
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| 15 | FILE *f=fopen("apm2.in","r"); |
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| 16 | |
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| 17 | fscanf(f,"%i",&n); |
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| 18 | mat=(int **) calloc(n*n,sizeof(int *)); |
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| 19 | for(i=0;i<n;i++) |
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| 20 | mat[i]=(int *) calloc(n,sizeof(int)); |
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| 21 | for(i=0;i<n;i++) |
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| 22 | { |
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| 23 | for(j=0;j<n;j++) |
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| 24 | fscanf(f,"%i",&mat[i][j]); |
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| 25 | } |
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| 26 | fclose(f); |
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| 27 | |
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| 28 | memset(viz,0,sizeof(viz)); |
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| 29 | time1=clock(); |
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| 30 | key[0]=0; |
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| 31 | for(i=1;i<n;i++) |
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| 32 | key[i]=inf; |
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| 33 | |
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| 34 | for(;;) |
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| 35 | { |
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| 36 | min=inf; |
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| 37 | for(i=0;i<n;i++) |
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| 38 | { |
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| 39 | if(viz[i]==0 && key[i]<min) |
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| 40 | { |
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| 41 | min=key[i]; |
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| 42 | imin=i; |
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| 43 | } |
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| 44 | } |
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| 45 | if(min==inf) |
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| 46 | break; |
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| 47 | viz[imin]=1; |
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| 48 | cost+=min; |
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| 49 | for(i=0;i<n;i++) |
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| 50 | { |
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| 51 | if(viz[i]==0 && mat[imin][i]<key[i]) |
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| 52 | { |
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| 53 | prev[i]=imin; |
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| 54 | key[i]=mat[imin][i]; |
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| 55 | } |
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| 56 | } |
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| 57 | } |
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| 58 | time2=clock(); |
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| 59 | printf("Au trecut %f secunde \n",(double)(time2-time1)/CLOCKS_PER_SEC); |
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| 60 | f=fopen("apm2.out","w"); |
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| 61 | fprintf(f,"%i\n",cost); |
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| 62 | fprintf(f,"%i\n",n-1); |
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| 63 | for(i=1;i<n;i++) |
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| 64 | fprintf(f,"%i %i\n",prev[i]+1,i+1); |
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| 65 | fclose(f); |
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| 66 | for(i=0;i<n;i++) |
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| 67 | free(mat[i]); |
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| 68 | free(mat); |
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| 69 | return 0; |
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| 70 | } |
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