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View Compilation Error

0_0_31305094_16489.cpp:13:13: error: expected ')' before ',' token
     node(cnt,sum,sqsum):cnt(cnt),sum(sum),sqsum(sqsum)
             ^
0_0_31305094_16489.cpp: In function 'LL dfs(LL, LL, LL, LL, LL)':
0_0_31305094_16489.cpp:23:30: error: no matching function for call to 'node::node(int, int, int)'
             return node(0,0,0);
                              ^
0_0_31305094_16489.cpp:23:30: note: candidates are:
0_0_31305094_16489.cpp:8:5: note: node::node()
     node()
     ^
0_0_31305094_16489.cpp:8:5: note:   candidate expects 0 arguments, 3 provided
0_0_31305094_16489.cpp:6:8: note: constexpr node::node(const node&)
 struct node{
        ^
0_0_31305094_16489.cpp:6:8: note:   candidate expects 1 argument, 3 provided
0_0_31305094_16489.cpp:6:8: note: constexpr node::node(node&&)
0_0_31305094_16489.cpp:6:8: note:   candidate expects 1 argument, 3 provided
0_0_31305094_16489.cpp:26:30: error: no matching function for call to 'node::node(int, int, int)'
             return node(1,0,0);
                              ^
0_0_31305094_16489.cpp:26:30: note: candidates are:
0_0_31305094_16489.cpp:8:5: note: node::node()
     node()
     ^
0_0_31305094_16489.cpp:8:5: note:   candidate expects 0 arguments, 3 provided
0_0_31305094_16489.cpp:6:8: note: constexpr node::node(const node&)
 struct node{
        ^
0_0_31305094_16489.cpp:6:8: note:   candidate expects 1 argument, 3 provided
0_0_31305094_16489.cpp:6:8: note: constexpr node::node(node&&)
0_0_31305094_16489.cpp:6:8: note:   candidate expects 1 argument, 3 provided
0_0_31305094_16489.cpp:29:25: error: 'dp' was not declared in this scope
     if((!lead)&&(!op)&&(dp[pos][st1][st2].cnt!=-1))
                         ^
0_0_31305094_16489.cpp:31:15: error: 've' was not declared in this scope
     LL tmp=op?ve[pos]:9;
               ^
0_0_31305094_16489.cpp:36:9: error: 'tmp1' was not declared in this scope
         tmp1=
         ^
0_0_31305094_16489.cpp:37:9: error: expected primary-expression before 'if'
         if((lead)&&i==0)
         ^
0_0_31305094_16489.cpp: In function 'LL solve(LL)':
0_0_31305094_16489.cpp:46:5: error: 've' was not declared in this scope
     ve[len++]=-1;
     ^
0_0_31305094_16489.cpp:52:30: error: conversion from 'LL {aka long long int}' to non-scalar type 'node' requested
     node tt=dfs(len-1,0,0,1,1);
                              ^
0_0_31305094_16489.cpp: In function 'int main()':
0_0_31305094_16489.cpp:59:5: error: 'fec' was not declared in this scope
     fec[0]=1;
     ^
0_0_31305094_16489.cpp:65:17: error: 't' was not declared in this scope
     scanf("%d",&t);
                 ^
0_0_31305094_16489.cpp:68:27: error: 'l' was not declared in this scope
         scanf("%lld%lld",&l,&r);
                           ^
0_0_31305094_16489.cpp:68:30: error: 'r' was not declared in this scope
         scanf("%lld%lld",&l,&r);
                              ^


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