/
code_of_duty2.c
executable file
·258 lines (255 loc) · 6.25 KB
/
code_of_duty2.c
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#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <assert.h>
int getnumber(char* buf, int size, int delim, FILE* fp) {//suppose number have enough place in buffer
int t=-1;
int i=0;
while( i<size ) {
t=fgetc(fp);
if(t==EOF) {
if(feof(fp)) {
/*printf("(%d) ", __LINE__);
printf("End-Of-File.\n");//*/
}
else {
fprintf(stderr, "(%d) ", __LINE__);
perror("Can not read file.");
}
break;
}
if(t=='\r'||t=='\n'||t==delim) break;
buf[i]=t;
++i;
}
buf[i]='\0';
return i;
}
void show(FILE* fp, const char const* tableau, int size) {
if(size==0) return;
fprintf(fp, "(");
for(int i=0;i<size-1;++i) {
fprintf(fp, "%d, ", tableau[i]);
}
fprintf(fp, "%d", tableau[size-1]);
fprintf(fp, ")\n");
}
int main() {
FILE* fp=fopen("input.txt", "rb");
if(!fp) {
fprintf(stderr, "[ERROR] Can not open file 'input.txt' for reading (%d).\n", __LINE__);
return 1;
}
FILE* fp2=fopen("output2.txt", "wb");
if(!fp2) {
fprintf(stderr, "[ERROR] Can not open file 'output.txt' for writing (%d).\n", __LINE__);
return 2;
}
char buf[5];//2 digits, \r\n, \0
int res=0;
int size=1;
int number=0;
while(size>0) {
res=getnumber(buf, 5, ' ', fp);
assert(buf[0]>='0');
assert(buf[0]<='9');
int size=(buf[0]-'0');
if(buf[1]>='0'&&buf[1]<='9') {
size*=10;
size+=(buf[1]-'0');
}
memset(buf, '\0', 5);
printf("[INFO] size=%d\n", size);
if(size==0) {
fprintf(stderr, "[INFO] end of file (%d).\n", __LINE__);
break;
}
char* tableau=(char*)calloc(size, sizeof(char));
int index=0;
for(int i=0;i<size;++i) {
res=getnumber(buf, 5, ' ', fp);
number=(buf[0]-'0');
if(res==2) {
number*=10;
number+=(buf[1]-'0');
}
memset(buf, '\0', 5);
assert( res==1 || res==2 );
tableau[index]=number;
++index;
}
//tableau read
int sum=0;
for(int i=0;i<size;++i) {
sum+=tableau[i];
}
printf("[INFO] sum=%d\n", sum);
if(sum/size*size==sum) {
printf("[INFO] équilibrage possible.\n");
int avg=sum/size;
printf("[INFO] valeur moyenne: %d\n", avg);
res=0;
for(int i=0;i<size;++i) {
if(tableau[i]!=avg) res=1;
}
/*équilibrage start*/
if(res==0) {
printf("tableau déjà équilibré.\n");
}
int iter=0;
fprintf(fp2, "%d : ", iter);
show(fp2, tableau, size);
while(res!=0) {
res=0;
for(int i=0;i<size;++i) {
if(tableau[i]!=avg) res=1;
}
if(res==0) break;
/*équilibrage start*/
for(int i=0;i<size-1;++i) {
if( tableau[i]>avg && tableau[i+1]<=avg ) {
--tableau[i];
++tableau[i+1];
}
/*else if( tableau[i]<avg && tableau[i+1]>=avg ) {
++tableau[i];
--tableau[i+1];
}//*/
else if( tableau[i]>avg && tableau[i+1]>=avg && tableau[i]>(tableau[i+1]+1) ) {
--tableau[i];
++tableau[i+1];
}
/*else if( tableau[i]<avg && tableau[i+1]<=avg && tableau[i]<(tableau[i+1]-1) ) {
++tableau[i];
--tableau[i+1];
}//*/
else if( i>0) {
if( tableau[i]>avg && tableau[i-1]<=avg ) {
--tableau[i];
++tableau[i-1];
}
/*else if( tableau[i]<avg && tableau[i-1]>=avg ) {
++tableau[i];
--tableau[i-1];
}//*/
else if( tableau[i]>avg && tableau[i-1]>=avg && tableau[i]>(tableau[i-1]+1) ) {
--tableau[i];
++tableau[i-1];
}
/*else if( tableau[i]<avg && tableau[i-1]<=avg && tableau[i]<(tableau[i-1]-1) ) {
++tableau[i];
--tableau[i-1];
}//*/
}
}
{
int i=size-1;
//repeat start
if( tableau[i]>avg && tableau[i-1]<=avg ) {
--tableau[i];
++tableau[i-1];
}
/*else if( tableau[i]<avg && tableau[i-1]>=avg ) {
++tableau[i];
--tableau[i-1];
}//*/
else if( tableau[i]>avg && tableau[i-1]>=avg && tableau[i]>(tableau[i-1]+1) ) {
--tableau[i];
++tableau[i-1];
}
/*else if( tableau[i]<avg && tableau[i-1]<=avg && tableau[i]<(tableau[i-1]-1) ) {
++tableau[i];
--tableau[i-1];
}//*/
}
//repeat stop
++iter;
fprintf(fp2, "%d : ", iter);
show(fp2, tableau, size);
if(iter==15000) {
printf("[INFO] probably error\n");
break;
}
}
/*équilibrage stop*/
}
else {
printf("[INFO] équilibrage PAS possible.\n");
fprintf(fp2, "-1\n");
}
res=getnumber(buf, 5, ' ', fp);
assert(res==0);//empty line
assert(buf[0]=='\0'||buf[0]=='\r'||buf[0]=='\n');
}
fclose(fp2);
fp2=fopen("output2.txt", "rb");
FILE* fp3=fopen("output.txt", "wb");
long pos=0;//début iter
long pos2=0;//fin iter
long pos3=0;//temp
char* buffer=(char*)calloc(6400, sizeof(char));
number=-1;
int number2=-2;
int number3=-2;
number=0;
pos=ftell(fp2);
while(!feof(fp2)) {
memset(buffer, '\0', 6400);
if(fgets(buffer, 6400, fp2)==NULL) {//lire ligne
if(feof(fp2)) {
/*printf("(%d) ", __LINE__);
printf("End-Of-File.\n");//*/
}
}
sscanf(buffer, "%d ", &number);//récupérer numéro iter
if(number==-2) break;
if(number>number2) {
number2=number;
pos3=ftell(fp2);//position dernière iter (après)
}
else {//plus petit = new tableau
pos2=pos3;//set fin iter
fprintf(fp3, "%d\n", number2);//dernière iter
fseek(fp2, pos, SEEK_SET);//go début iter
while(ftell(fp2)<pos2) {
if(fgets(buffer, 6400, fp2)==NULL) {//lire ligne
if(feof(fp2)) {
/*printf("(%d) ", __LINE__);
printf("End-Of-File.\n");//*/
}
break;
}
fprintf(fp3, "%s", buffer);
}
fprintf(fp3, "\n");
pos=pos2;
number=-1;
number2=-2;
number3=-2;
}
if(strcmp(buffer, "-1")==0||strcmp(buffer, "-1\r")==0||strcmp(buffer, "-1\n")==0||strcmp(buffer, "-1\r\n")==0||strcmp(buffer, "-1\n\r")==0) {
fprintf(fp3, "-1\n\n");
res=getnumber(buf, 5, ' ', fp);
assert(res==0);
if(feof(fp2)) break;
res=getnumber(buf, 5, ' ', fp);
assert(res==0);
if(feof(fp2)) break;
number=-1;
number2=-2;
number3=-2;
pos=ftell(fp2);
pos2=pos;
pos3=pos;
continue;
}
}
free(tableau);
fclose(fp3);
fclose(fp2);
fclose(fp);
return 0;
}
//