Compilare: main.cpp: In function 'int main()': main.cpp:147:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < poz.size(); i++) { ~~^~~~~~~~~~~~ main.cpp:148:13: warning: unused variable 'x' [-Wunused-variable] int x = h[poz[i]]; ^ main.cpp:149:13: warning: unused variable 'y' [-Wunused-variable] int y = poz[i]; ^ main.cpp:137:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("viteza.in", "r", stdin); ^ main.cpp:138:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("viteza.out", "w", stdout); ^ main.cpp:139:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ main.cpp:142:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &y); ^ main.cpp:155:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^ main.cpp:160:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &x, &y, &k); ^