Compilare: main.cpp: In function 'int main()': main.cpp:29:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=1;i<=n;i++) ^~~ main.cpp:31:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for(i=2;i<=n;i++) ^~~ main.cpp: At global scope: main.cpp:14:37: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) void S(int b) ^ main.cpp:6:36: warning: always_inline function might not be inlinable [-Wattributes] __attribute__((always_inline)) int A() ^ main.cpp: In function 'int main()': main.cpp:28:92: 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),freopen("rmq.out","w",stdout),fgets(p,30,stdin),n=A(),m=A(); ^ main.cpp:28:92: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] main.cpp:28:92: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] main.cpp:30:42: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(p,30,stdin),o=0,b[0][i]=A(); ^ main.cpp:37:84: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(p,30,stdin),o=0,i=A(),j=A(),n=c[j-i+1],S(N(b[n][i],b[n][j+1-(1<<n)])); ^