Compilare: main.cpp: In function 'int main()': main.cpp:18:34: warning: suggest parentheses around '+' inside '<<' [-Wparentheses] if(v[rmq[i][j-1]]<v[rmq[i+1<<(j-1)][j-1]]) rmq[i][j]=rmq[i][j-1]; ~^~ main.cpp:19:29: warning: suggest parentheses around '+' inside '<<' [-Wparentheses] else rmq[i][j]=rmq[i+1<<(j-1)][j-1]; ~^~ main.cpp:9:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] { freopen("rmq.in","r",stdin); ^ main.cpp:10:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rmq.out","w",stdout); ^ main.cpp:13:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&q); ^ main.cpp:14:40: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for(i=1;i<=n;i++) scanf("%d",&v[i]); ^ main.cpp:25:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b); ^