/* >>~~ UVa Online Judge ACM Problem Solution ~~<< ID: 10016 Name: Flip-Flop the Squarelotron Problem: https://onlinejudge.org/external/100/10016.pdf Language: C++ Author: Arash Shakery Email: arash.shakery@gmail.com */ #include #include using namespace std; inline int readchar() { const int N = 4194304; static char buf[N]; static char *p = buf, *end = buf; if (p == end) { if ((end = buf + fread(buf, 1, N, stdin)) == buf) return EOF; p = buf; } return *p++; } bool isdigit(char ch) { return ch>='0' && ch<='9'; } inline int readInt() { char ch; int sgn=1, r=0; while (!isdigit(ch=readchar()) && ch!='-'); if (ch == '-') sgn = -1; else r = ch-'0'; while (isdigit(ch=readchar())) r = (r<<3) + (r<<1) + ch-'0'; return sgn*r; } // ------------------------------------------------------------------------- int X[200][200]; int main() { int T = readInt(); while (T--) { int n = readInt(); for (int i=0; i>1; ++i) { int s = i, e = n-i-1, l = n-2*i, md=l>>1, cnt = readInt(); for (int j=0; j