51 lines
1.4 KiB
Bash
Executable File
51 lines
1.4 KiB
Bash
Executable File
#!/bin/bash
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read line
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target=( $(sed 's/^.*x=\(.*\)\.\.\(.*\), y=\(.*\)\.\.\(.*\)/\1 \2 \3 \4/' <<< $line) )
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possible_x=()
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for ((i=1;i<target[1];i++)); do
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velocity_x=$i
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position_x=0
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while [ $velocity_x -gt 0 ] && [ $position_x -lt ${target[0]} ]; do
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position_x=$((position_x+velocity_x))
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velocity_x=$((velocity_x-1))
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done
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if [ $position_x -ge ${target[0]} ] && [ $position_x -le ${target[1]} ]; then
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possible_x+=( $i )
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fi
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done
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highest_y=0
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for ((i=0;i<${#possible_x[@]};i++)); do
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temp_highest_y=0
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possible_y=$((target[2]*(-1)-1))
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for ((j=$possible_y;j>0;j--)); do
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velocity_x=${possible_x[$i]}
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velocity_y=$j
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position_x=0
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position_y=0
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while [ $position_x -le ${target[1]} ] && [ $position_y -ge ${target[2]} ]; do
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position_x=$((position_x+velocity_x))
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position_y=$((position_y+velocity_y))
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velocity_x=$((velocity_x-1))
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if [ $velocity_x -lt 0 ]; then
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velocity_x=0
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fi
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velocity_y=$((velocity_y-1))
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if [ $position_y -gt $temp_highest_y ]; then
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temp_highest_y=$position_y
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fi
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if [ $position_x -ge ${target[0]} ] && [ $position_y -ge ${target[2]} ] \
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&& [ $position_x -le ${target[1]} ] && [ $position_y -le ${target[3]} ]; then
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if [ $temp_highest_y -gt $highest_y ]; then
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highest_y=$temp_highest_y
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fi
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break
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fi
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done
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done
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done
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echo $highest_y
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