Compilare: user.cpp: In function ‘void make_rmq()’: user.cpp:37:72: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] rmq[la-1][lb-1][i][min(1, j-(1<<lb-1))], ^ user.cpp:38:69: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] rmq[la-1][lb-1][min(1, i-(1<<la-1))][j], ^ user.cpp:39:69: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] rmq[la-1][lb-1][min(1, i-(1<<la-1))][min(1, j-(1<<lb-1))] ); } } } } } ^ user.cpp:39:90: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] rmq[la-1][lb-1][min(1, i-(1<<la-1))][min(1, j-(1<<lb-1))] ); } } } } } ^ user.cpp: In function ‘int main()’: user.cpp:62:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("matrice3.in", "r", stdin); ^ user.cpp:63:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("matrice3.out", "w", stdout); ^ user.cpp:67:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d ", &n, &m, &q); ^ user.cpp:69:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s ", mx+1); ^ user.cpp:78:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&x1,&y1,&x2,&y2); ^