Compilare: main.cpp: In function 'int main()': main.cpp:27:34: warning: right operand of comma operator has no effect [-Wunused-value] for(i=1;i<=n;i++) sol[i]=i,cost[i]; ~~~~~~^ main.cpp:29:41: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if(sol[i+1]>sol[i]+1||sol[i+1]==sol[i]+1&&cost[i+1]>cost[i]) ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~ main.cpp:32:47: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if(sol[i+aa]>sol[i]+1||sol[i+aa]==sol[i]+1&&cost[i+aa]>cost[i]) ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~ main.cpp:35:45: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if(sol[i+e]>sol[i]+1||sol[i+e]==sol[i]+1&&cost[i+e]>cost[i]+((e+1)/2)) ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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("scara3.in","r",stdin); ^ main.cpp:11:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("scara3.out","w",stdout); ^ main.cpp:12:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:13:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&apa); ^ main.cpp:15:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&poz,&cnt); ^ main.cpp:19:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&ener); ^ main.cpp:21:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&poz,&cnt); ^