Compilare: main.cpp: In function 'int main()': main.cpp:61:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] cost[money[i]] = cost[mod] > money[i] ? money[i] : cost[mod]; ~~~~~~~~~~^~~~~~~~~~ main.cpp:86:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (next_val < cost[next_idx]) ~~~~~~~~~^~~~~~~~~~~~~~~~ main.cpp:44:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ main.cpp:48:37: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", money + i); ^