Compilare: main.cpp: In function 'int main()': main.cpp:44:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &n, &m, &k); ^ main.cpp:47:50: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &e.v1, &e.v2, &e.w); ^ main.cpp:61:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &v1, &v2); ^ main.cpp: In function 'void initLog2()': main.cpp:111:17: warning: iteration 29998 invokes undefined behavior [-Waggressive-loop-optimizations] log2[i] = logi; ~~~~~~~~^~~~~~ main.cpp:107:23: note: within this loop for (int i = 1; i < (NMAX << 1); i++) ~~^~~~~~~~~~~~~