Compilare: main.cpp: In function 'int main()': main.cpp:79:26: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if (ans < k[y] && a[x][i] - a[y][ans] > a[y][ans + 1] - a[x][i] || ans == 0) ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:87:40: warning: unused variable 'ans' [-Wunused-variable] int med = (sp[y] - sp[x - 1]) / 2, ans = 0; ^~~ main.cpp:56:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("qvect.in", "r", stdin); ^ main.cpp:57:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("qvect.out", "w", stdout); ^ main.cpp:58:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &q); ^ main.cpp:60:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &k[i]); ^ main.cpp:62:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a[i][j]); ^ main.cpp:66:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &t, &x, &y); ^