basic a2

a2-Vollgeladen/src/main.c

@@ -0,0 +1,82 @@
+#include <stdio.h>
+#include <acl/file.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <inttypes.h>
+
+#define panicio	{\
+	perror(*filepath);\
+	return 1;\
+}
+#define getNumber strtol(nextnumber + 1, &nextnumber, 10)
+
+struct hotel {
+	uint_least16_t minutes;
+	uint_least8_t rating;
+};
+
+int compareReverse(const void *a, const void *b) {
+	return (uint_least8_t*)a - (uint_least8_t*)b;
+}
+
+int main(int argc, char *argv[]) {
+	for(char **filepath = argv + 1; filepath - argv < argc; ++filepath) {
+		printf("%s:\n", *filepath);
+		uint_least16_t numberHotels, totalMinutes;
+		struct hotel *hotels;
+		uint_least8_t *ratings;
+		{
+			char *inputText;
+			{
+				FILE *inputFile = fopen(*filepath, "rb");
+				if(inputFile == NULL) panicio;
+				bool success;
+				inputText = acl_ReadTextFile(inputFile, &success);
+				if(!success) panicio;
+				fclose(inputFile);
+			}
+			{
+				char *nextnumber;
+				numberHotels = strtol(inputText, &nextnumber, 10);
+				totalMinutes = getNumber;
+				hotels = malloc(numberHotels * sizeof *hotels + numberHotels * sizeof *ratings);
+				ratings = (uint_least8_t*)(hotels + numberHotels);
+				for(uint_least16_t i = 0; i < numberHotels; ++i) {
+					hotels[i].minutes = getNumber;
+					ratings[i] = 10 * getNumber;
+					ratings[i] += getNumber;
+					hotels[i].rating = ratings[i];
+				}
+			}
+			free(inputText);
+		}
+		qsort(ratings, numberHotels, sizeof *ratings, compareReverse);
+		{
+			struct hotel hotelRoute[4];
+			uint_least8_t stoppedHotels;
+			{
+				uint_least8_t *rating = ratings;
+				do {
+					uint_least16_t lastHotelMinutes = 0;
+					struct hotel *possibleStop = NULL;
+					stoppedHotels = 0;
+					for(struct hotel *currentHotel = hotels; currentHotel - hotels < numberHotels; ++currentHotel) {
+						if(currentHotel->minutes - lastHotelMinutes > 360 && possibleStop != NULL) {
+							if(stoppedHotels >= 4) break;
+							hotelRoute[stoppedHotels] = *possibleStop;
+							lastHotelMinutes = possibleStop->minutes;
+							currentHotel = possibleStop;
+							++stoppedHotels;
+						}
+						if(currentHotel->rating >= *rating) possibleStop = currentHotel;
+					}
+					++rating;
+				} while(totalMinutes - hotelRoute[stoppedHotels - 1].minutes > 360);
+			}
+			for(struct hotel *hotelPrint = hotelRoute; hotelPrint - hotelRoute < stoppedHotels; ++hotelPrint) {
+				printf("Hotel: %" PRIuLEAST16 " m, rating: %" PRIuLEAST8 "\n", hotelPrint->minutes, hotelPrint->rating);
+			}
+		}
+		free(hotels);
+	}
+}