/in/foo.cc: In function 'int main()':
/in/foo.cc:34:51: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
             if (dp[i][j - 1].val < dp[i + (1 << j - 1)][j - 1].val) {
                                                 ~~^~~
/in/foo.cc:38:47: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
                 dp[i][j].val = dp[i + (1 << j - 1)][j - 1].val;
                                             ~~^~~
/in/foo.cc:39:48: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
                 dp[i][j].indx = dp[i + (1 << j - 1)][j - 1].indx;
                                              ~~^~~