diff --git a/solvedle.c b/solvedle.c
index b87a60f..83b6fb2 100644
--- a/solvedle.c
+++ b/solvedle.c
@@ -3,14 +3,42 @@
 #include <string.h>
 #include <stdint.h>
 
+#if TIME_SECTIONS
+    #include <time.h>
+
+    clock_t start, end;
+    double section_time, total_time;
+    char * curr_section;
+
+    #define START_TIME(section_name) do {\
+        curr_section = section_name;\
+        printf("BEGIN %s\n", curr_section);\
+        start = clock();\
+    } while (0);
+
+    #define END_TIME do {\
+        end = clock();\
+        section_time = ((double) (end - start)) / CLOCKS_PER_SEC;\
+        printf("END %s: %fs\n\n", curr_section, section_time);\
+        total_time += section_time;\
+    } while (0);
+
+#else
+    // TIME_SECTIONS not specified, define to be nothing
+    #define START_TIME(section_name) 0;
+    #define END_TIME 0;
+
+#endif
+
 #define WORDS 12971
 #define WORDLEN 5
 #define CHARMASK ~(0b11u << 5u)
 
-typedef struct {
+typedef struct signature {
     char * word;
     uint32_t sign;
 } signature;
+
 uint32_t
     rawWC = 0,
     fiveUniqWC = 0,
@@ -18,10 +46,10 @@ uint32_t
 ;
 
 int compare(const void * a, const void * b) {
-    return (((signature *)a)->sign) - (((signature *)b)->sign);
+    return ((signature *)a)->sign - ((signature *)b)->sign;
 }
 
-void * rmdups(signature * arr) {
+signature* rmdups(signature * arr) {
     // list is already sorted
     uint32_t nitems = fiveUniqWC;
     for (uint32_t i = 0; i < nitems; /* handled in loop */) {
@@ -35,7 +63,6 @@ void * rmdups(signature * arr) {
     }
     cookedWC = nitems;
     return arr;
-    // return realloc(arr, cookedWC * sizeof(signature));
 }
 
 uint32_t getsig(char * word) {
@@ -51,52 +78,71 @@ uint32_t getsig(char * word) {
     return result;
 }
 
-void * makeArray(FILE * f) {
+signature* makeArray(FILE * f) {
 
     signature* sigs = (signature*) calloc(WORDS, sizeof(signature));
 
     char word[WORDLEN + sizeof(char)]; // 5 letters + \n
-    uint32_t charsRead;
 
     while (fread(word, sizeof(char), WORDLEN + sizeof(char), f) != 0) {
         rawWC++;
         // only assign sign so far, more efficient
         uint32_t s = getsig(word);
         if (s != 0) {
+            // no duplicate word letters in word
             sigs[fiveUniqWC].word = strndup(word, 5);
             sigs[fiveUniqWC].sign = s;
             fiveUniqWC++;
         }
     }
 
-    // return realloc(sigs, fiveUniqWC * sizeof(signature));
     return sigs;
 }
 
 int main(int argc, char * argv[]) {
+#if TIME_SECTIONS
+    clock_t prog_start = clock();
+#endif
+
+#if ! ASSUME_SAFE
     if (argc != 2) {
         fprintf(stderr, "usage: %s file\n", argv[0]);
         return 2;
     }
+#endif
+
     FILE * f = fopen(argv[1], "r");
+
+#if ! ASSUME_SAFE
     if (f == NULL) {
         fprintf(stderr, "%s: %s: no such file or directory\n", argv[0], argv[1]);
         return 2;
     }
-    signature* sigs = (signature*) makeArray(f);
+#endif
+
+    START_TIME("making array")
+    signature* sigs = makeArray(f);
+    END_TIME
+
     fclose(f);
 
+#if PRINT_INTERMEDIATES
     printf("read %u words\n", rawWC);
     printf("kept %u words with 5 unique letters\n", fiveUniqWC);
+#endif
 
+    START_TIME("sorting")
     qsort(sigs, fiveUniqWC, sizeof(signature), compare);
-    sigs = (signature*) rmdups(sigs);
+    END_TIME
+
+    START_TIME("removing duplicates")
+    sigs = rmdups(sigs);
+    END_TIME
+
+#if PRINT_INTERMEDIATES
     printf("ended with %u totally unique words\n", cookedWC);
-#if 0
-    for (uint32_t i = 0; i < cookedWC; i++) {
-        printf("%u\n", sigs[i].sign);
-    }
-#else
+#endif
+    START_TIME("finding words")
     for (uint32_t i1 = 0; i1 < cookedWC; i1++) {
         uint32_t a = sigs[i1].sign;
 
@@ -106,7 +152,7 @@ int main(int argc, char * argv[]) {
                 continue;
             }
             uint32_t ab = a | b;
-#if print
+#if PRINT_INTERMEDIATES
             fprintf(stderr, "%s:%s\n", sigs[i1].word, sigs[i2].word);
 #endif
 
@@ -116,7 +162,7 @@ int main(int argc, char * argv[]) {
                     continue;
                 }
                 uint32_t abc = ab | c;
-#if print
+#if PRINT_INTERMEDIATES
                 fprintf(stderr, "%s:%s:%s\n", sigs[i1].word, sigs[i2].word, sigs[i3].word);
 #endif
 
@@ -126,7 +172,7 @@ int main(int argc, char * argv[]) {
                         continue;
                     }
                     uint32_t abcd = abc | d;
-#if print
+#if PRINT_INTERMEDIATES
                     fprintf(stderr, "%s:%s:%s:%s\n", sigs[i1].word, sigs[i2].word, sigs[i3].word, sigs[i4].word);
 #endif
 
@@ -136,13 +182,22 @@ int main(int argc, char * argv[]) {
                             continue;
                         }
                         fprintf(stderr, "%s, %s, %s, %s, %s\n", sigs[i1].word, sigs[i2].word, sigs[i3].word, sigs[i4].word, sigs[i5].word);
-                        // goto loopend;
+#if FIND_ONE
+                        goto loopend;
+#endif
                     }
                 }
             }
         }
     }
-    // loopend:
+#if FIND_ONE
+    loopend:
+#endif
+    END_TIME
+
+#if TIME_SECTIONS
+    clock_t prog_end = clock();
+    printf("%s took %fs total\n", argv[0], ((double)(prog_end - prog_start)) / CLOCKS_PER_SEC);
 #endif
 
     return 0;