View Compilation Error

0_0_36448799_23445.cpp:5:1: error: expected ',' or ';' before 'int'
 int trie[20][30],sum[N];
 ^
0_0_36448799_23445.cpp: In function 'void add()':
0_0_36448799_23445.cpp:13:12: error: 'trie' was not declared in this scope
         if(trie[c][x]==0)
            ^
0_0_36448799_23445.cpp:15:11: error: 'trie' was not declared in this scope
         c=trie[c][x];
           ^
0_0_36448799_23445.cpp:16:9: error: 'sum' was not declared in this scope
         sum[c]++;
         ^
0_0_36448799_23445.cpp: In function 'void query()':
0_0_36448799_23445.cpp:25:12: error: 'trie' was not declared in this scope
         if(trie[c][x]==0){
            ^
0_0_36448799_23445.cpp:29:11: error: 'trie' was not declared in this scope
         c=trie[c][x];
           ^
0_0_36448799_23445.cpp:31:19: error: 'sum' was not declared in this scope
     printf("%d\n",sum[c]);
                   ^