View Compilation Error

0_0_18519370_25200.cpp:4:13: error: 'MAXN' was not declared in this scope
 long long s[MAXN],p[MAXN];  
             ^
0_0_18519370_25200.cpp:4:21: error: 'MAXN' was not declared in this scope
 long long s[MAXN],p[MAXN];  
                     ^
0_0_18519370_25200.cpp:5:16: error: 'MAXN' was not declared in this scope
 long long minm[MAXN];  
                ^
0_0_18519370_25200.cpp: In function 'int main()':
0_0_18519370_25200.cpp:14:33: error: 's' was not declared in this scope
             scanf("%I64d%I64d",&s[i],&p[i]);  
                                 ^
0_0_18519370_25200.cpp:14:39: error: 'p' was not declared in this scope
             scanf("%I64d%I64d",&s[i],&p[i]);  
                                       ^
0_0_18519370_25200.cpp:16:9: error: 'minm' was not declared in this scope
         minm[n-1] = s[n-1] * p[n-1];  
         ^
0_0_18519370_25200.cpp:16:21: error: 's' was not declared in this scope
         minm[n-1] = s[n-1] * p[n-1];  
                     ^
0_0_18519370_25200.cpp:16:30: error: 'p' was not declared in this scope
         minm[n-1] = s[n-1] * p[n-1];  
                              ^