/in/foo.cc: In function 'int main()':
/in/foo.cc:40:19: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
    if(i + (1 << j - 1) > n) continue;
                 ~~^~~
/in/foo.cc:41:28: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
    if(f[i][j-1] < f[i+(1<<j-1)][j-1])
                           ~^~
/in/foo.cc:43:28: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
    else f[i][j] = f[i+(1<<j-1)][j-1], g[i][j] = g[i+(1<<j-1)][j-1];
                           ~^~
/in/foo.cc:43:58: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
    else f[i][j] = f[i+(1<<j-1)][j-1], g[i][j] = g[i+(1<<j-1)][j-1];
                                                         ~^~