Compilare: main.cpp: In function 'int main()': main.cpp:100:13: warning: this 'else' clause does not guard... [-Wmisleading-indentation] else ^~~~ main.cpp:102:17: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else' arb[nod].nr = arb[nod*2].nr + arb[nod*2 + 1].nr; ^~~ main.cpp:77:14: warning: unused variable 'c' [-Wunused-variable] int a, b, c, m, n, i, nod; ^ main.cpp:75:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("eliminare.in", "r", stdin); ^ main.cpp:76:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("eliminare.out", "w", stdout); ^ main.cpp:79:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ main.cpp:82:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a); ^ main.cpp:88:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &a, &b); ^