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Co-authored-by: sigonasr2 <sigonasr2@gmail.com>
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sigonasr2, Sig, Sigo 2 years ago committed by GitHub
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  1. 2
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  2. 2
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      archives/18/current
  4. 76
      archives/18/src/main.c
  5. 54
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  6. 9
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  8. 212
      src/main.c

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How many such routes are there through a 20×20 grid?
https://projecteuler.net/problem=14
https://projecteuler.net/problem=15
*/
void move(int x,int y,long*pathCount) {

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archives/15/src/threadedmain.c
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How many such routes are there through a 20×20 grid?
https://projecteuler.net/problem=14
https://projecteuler.net/problem=15
*/
void move(int x,int y,long*pathCount) {

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#include <stdio.h>
#include "utils.h"
#define TARGET 2
/*
By starting at the top of the triangle below and moving to adjacent numbers on the row below, the maximum total from top to bottom is 23.
3
7 4
2 4 6
8 5 9 3
That is, 3 + 7 + 4 + 9 = 23.
Find the maximum total from top to bottom of the triangle below:
75
95 64
17 47 82
18 35 87 10
20 04 82 47 65
19 01 23 75 03 34
88 02 77 73 07 63 67
99 65 04 28 06 16 70 92
41 41 26 56 83 40 80 70 33
41 48 72 33 47 32 37 16 94 29
53 71 44 65 25 43 91 52 97 51 14
70 11 33 28 77 73 17 78 39 68 17 57
91 71 52 38 17 14 91 43 58 50 27 29 48
63 66 04 68 89 53 67 30 73 16 69 87 40 31
04 62 98 27 23 09 70 98 73 93 38 53 60 04 23
NOTE: As there are only 16384 routes, it is possible to solve this problem by trying every route. However, Problem 67, is the same challenge with a triangle containing one-hundred rows; it cannot be solved by brute force, and requires a clever method! ;o)
https://projecteuler.net/problem=18
*/
int main(int argc,char**argv) {
int rows[][15] = {
{75}
,{95,64}
,{17,47,82}
,{18,35,87,10}
,{20,4,82,47,65}
,{19,1,23,75,3,34}
,{88,2,77,73,7,63,67}
,{99,65,4,28,6,16,70,92}
,{41,41,26,56,83,40,80,70,33}
,{41,48,72,33,47,32,37,16,94,29}
,{53,71,44,65,25,43,91,52,97,51,14}
,{70,11,33,28,77,73,17,78,39,68,17,57}
,{91,71,52,38,17,14,91,43,58,50,27,29,48}
,{63,66,4,68,89,53,67,30,73,16,69,87,40,31}
,{4,62,98,27,23,9,70,98,73,93,38,53,60,4,23}};
int max=14;
for (int row=14;row>0;row--) {
for (int col=0;col<max;col++) {
int numb1=rows[row][col];
int numb2=rows[row][col+1];
//printf("Picked numbers: %d %d\n",numb1,numb2);
rows[row-1][col]+=(numb1>numb2)?numb1:numb2;
}
max--;
}
for (int i=0;i<15;i++) {
for (int j=0;j<15;j++) {
printf("%d\t",rows[i][j]);
}
printf("\n");
}
printf("\nYour maximum route is %d",rows[0][0]);
return 0;
}

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#include "utils.h"
#include <stdio.h>
#include <stdlib.h>
struct String add(struct String numb1, struct String numb2){
byte carryover=0;
int digitCount=0;
char*str = malloc(0);
if (numb1.length>=numb2.length) {
for (int offset=0;offset<numb1.length;offset++) {
str = realloc(str,++digitCount);
//printf("Digit count is now %d\n",digitCount);
if (numb2.length>offset) {
//printf("%c %c\n",numb1.str[numb1.length-offset-1],numb2.str[numb2.length-offset-1]);
int sum=((numb1.str[numb1.length-offset-1]-'0')+(numb2.str[numb2.length-offset-1]-'0'))+((carryover>0)?carryover--:0);
if (sum>=10) {
carryover=1;
sum-=10;
}
str[offset]=sum+'0';
} else {
str[offset]=numb1.str[numb1.length-offset-1];
}
}
} else {
for (int offset=0;offset<numb2.length;offset++) {
str = realloc(str,++digitCount);
//printf("Digit count is now %d\n",digitCount);
if (numb1.length>offset) {
//printf("%c %c\n",numb1.str[numb1.length-offset-1],numb2.str[numb2.length-offset-1]);
int sum=((numb1.str[numb1.length-offset-1]-'0')+(numb2.str[numb2.length-offset-1]-'0'))+((carryover>0)?carryover--:0);
if (sum>=10) {
carryover=1;
sum-=10;
}
str[offset]=sum+'0';
} else {
str[offset]=numb2.str[numb2.length-offset-1];
}
}
}
if (carryover>0) {
str = realloc(str,++digitCount);
str[digitCount-1]='1';
}
for (int i=0;i<digitCount/2;i++) {
char c = str[i];
char c2 = str[digitCount-i-1];
str[digitCount-i-1]=c;
str[i]=c2;
}
struct String newStr = {digitCount,str};
return newStr;
}

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#define true 1
#define false 0
#define boolean char
#define byte char
struct String{
int length;
char*str;
};
struct String add(struct String numb1, struct String numb2);

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#include <stdio.h>
#include "utils.h"
#define TARGET 2
/*
If the numbers 1 to 5 are written out in words: one, two, three, four, five, then there are 3 + 3 + 5 + 4 + 4 = 19 letters used in total.
By starting at the top of the triangle below and moving to adjacent numbers on the row below, the maximum total from top to bottom is 23.
3
7 4
2 4 6
8 5 9 3
If all the numbers from 1 to 1000 (one thousand) inclusive were written out in words, how many letters would be used?
That is, 3 + 7 + 4 + 9 = 23.
Find the maximum total from top to bottom of the triangle below:
NOTE: Do not count spaces or hyphens. For example, 342 (three hundred and forty-two) contains 23 letters and 115 (one hundred and fifteen) contains 20 letters. The use of "and" when writing out numbers is in compliance with British usage.
75
95 64
17 47 82
18 35 87 10
20 04 82 47 65
19 01 23 75 03 34
88 02 77 73 07 63 67
99 65 04 28 06 16 70 92
41 41 26 56 83 40 80 70 33
41 48 72 33 47 32 37 16 94 29
53 71 44 65 25 43 91 52 97 51 14
70 11 33 28 77 73 17 78 39 68 17 57
91 71 52 38 17 14 91 43 58 50 27 29 48
63 66 04 68 89 53 67 30 73 16 69 87 40 31
04 62 98 27 23 09 70 98 73 93 38 53 60 04 23
https://projecteuler.net/problem=17
NOTE: As there are only 16384 routes, it is possible to solve this problem by trying every route. However, Problem 67, is the same challenge with a triangle containing one-hundred rows; it cannot be solved by brute force, and requires a clever method! ;o)
https://projecteuler.net/problem=18
*/
int main(int argc,char**argv) {
int totalCount=0;
int counter=1;
int i=1;
int hundredsDigit=-1;
int tensDigit=-1;
while (i<=1000) {
hundredsDigit=-1;
tensDigit=-1;
counter=i;
int currentCount=totalCount;
if (counter==1000) {
//onethousand (11)
totalCount+=11;
counter-=1000;
printf("onethousand");
}
if (counter>=100) {
hundredsDigit=counter/100;
switch (hundredsDigit) {
case 1:
case 2:
case 6:{
//onehundred (10)
totalCount+=10;
printf("%s",hundredsDigit==1?"one":hundredsDigit==2?"two":"six");
}break;
case 3:
case 7:
case 8:{
//threehundred (12)
totalCount+=12;
printf("%s",hundredsDigit==3?"three":hundredsDigit==7?"seven":"eight");
}break;
case 4:
case 5:
case 9:{
//fourhundred (11)
totalCount+=11;
printf("%s",hundredsDigit==4?"four":hundredsDigit==5?"five":"nine");
}break;
}
printf("hundred");
counter-=hundredsDigit*100;
}
if (counter>=10) {
tensDigit=counter/10;
if (tensDigit!=0) {
if (hundredsDigit!=-1) {
//and (3)
totalCount+=3;
printf("and");
}
if (counter<20) {
switch (counter) {
case 10:{
//ten (3)
totalCount+=3;
printf("ten");
}break;
case 11:{
//eleven (6)
totalCount+=6;
printf("eleven");
}break;
case 12:{
//twelve (5)
totalCount+=5;
printf("twelve");
}break;
case 13:
case 14:
case 19:{
//thirteen (8)
totalCount+=8;
printf("%s",counter==13?"thirteen":counter==14?"fourteen":"nineteen");
}break;
case 15:
case 16:{
//fifteen (7)
totalCount+=7;
printf("%s",counter==15?"fifteen":"sixteen");
}break;
case 17:
case 18:{
//seventeen (9)
totalCount+=9;
printf("%s",counter==17?"seventeen":"eighteen");
}break;
}
counter=0;
} else {
switch (tensDigit) {
case 2:
case 3:
case 8:
case 9:{
//twenty (6)
totalCount+=6;
printf("%s",tensDigit==2?"twenty":tensDigit==3?"thirty":tensDigit==8?"eighty":"ninety");
}break;
case 4:
case 5:
case 6:{
//forty (5)
totalCount+=5;
printf("%s",tensDigit==4?"forty":tensDigit==5?"fifty":"sixty");
}break;
case 7:{
//seventy (7)
totalCount+=7;
printf("seventy");
}break;
}
counter-=tensDigit*10;
}
}
int rows[][15] = {
{75}
,{95,64}
,{17,47,82}
,{18,35,87,10}
,{20,4,82,47,65}
,{19,1,23,75,3,34}
,{88,2,77,73,7,63,67}
,{99,65,4,28,6,16,70,92}
,{41,41,26,56,83,40,80,70,33}
,{41,48,72,33,47,32,37,16,94,29}
,{53,71,44,65,25,43,91,52,97,51,14}
,{70,11,33,28,77,73,17,78,39,68,17,57}
,{91,71,52,38,17,14,91,43,58,50,27,29,48}
,{63,66,4,68,89,53,67,30,73,16,69,87,40,31}
,{4,62,98,27,23,9,70,98,73,93,38,53,60,4,23}};
int max=14;
for (int row=14;row>0;row--) {
for (int col=0;col<max;col++) {
int numb1=rows[row][col];
int numb2=rows[row][col+1];
//printf("Picked numbers: %d %d\n",numb1,numb2);
rows[row-1][col]+=(numb1>numb2)?numb1:numb2;
}
if (counter>0) {
if (tensDigit==-1&&hundredsDigit!=-1) {
//and (3)
totalCount+=3;
printf("and");
}
switch (counter) {
case 1:
case 2:
case 6:{
//one (3)
totalCount+=3;
printf("%s",counter==1?"one":counter==2?"two":"six");
}break;
case 3:
case 7:
case 8:{
//three (5)
totalCount+=5;
printf("%s",counter==3?"three":counter==7?"seven":"eight");
}break;
case 4:
case 5:
case 9:{
//four (4)
totalCount+=4;
printf("%s",counter==4?"four":counter==5?"five":"nine");
}break;
}
max--;
}
for (int i=0;i<15;i++) {
for (int j=0;j<15;j++) {
printf("%d\t",rows[i][j]);
}
printf(" %d:%d\n",i,totalCount-currentCount);
i++;
printf("\n");
}
printf("%d",totalCount);
printf("\nYour maximum route is %d",rows[0][0]);
return 0;
}
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