Compilare: main.cpp:3:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas] #pragma GCC optimization ("O3") main.cpp:4:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas] #pragma GCC optimization ("unroll-loops") main.cpp: In function 'long long int getAgg(int, int)': main.cpp:49:19: warning: operation on 'vf1' may be undefined [-Wsequence-point] stkMin[vf1++]={i, (vf1==0 ? 0 : stkMin[vf1-1].second) + 1LL*a[i]*(i-capStAct+1)}; ~~~^~ main.cpp:57:19: warning: operation on 'vf2' may be undefined [-Wsequence-point] stkMax[vf2++]={i, (vf2==0 ? 0 : stkMax[vf2-1].second) + 1LL*a[i]*(i-capStAct+1)}; ~~~^~ main.cpp: In function 'int main()': main.cpp:98:34: warning: format '%d' expects argument of type 'int', but argument 3 has type 'long long int' [-Wformat=] fprintf(out_file, "%d\n", ans); ^ main.cpp:83:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in_file, "%d", &n); ^ main.cpp:86:39: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in_file, "%d", &(a[i])); ^