Compilare: main.cpp: In function 'int solve(int)': main.cpp:28:17: warning: unused variable 'prev' [-Wunused-variable] int area = 0, prev = 0, count = 0; ^~~~ main.cpp:28:27: warning: unused variable 'count' [-Wunused-variable] int area = 0, prev = 0, count = 0; ^~~~~ main.cpp: In function 'int main()': main.cpp:39:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rosiimici.in", "r", stdin); ^ main.cpp:40:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rosiimici.out", "w", stdout); ^ main.cpp:42:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &n, &m, &q); ^ main.cpp:45:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a[i][j]); ^ main.cpp:51:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &query[i]); ^