Compilare: main.cpp: In function 'int main()': main.cpp:25:35: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses] dp[i & 1][j].first = dp[1 - i & 1][j - 1].first + 2; ~~^~~ main.cpp:26:57: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses] dp[i & 1][j].first = max(dp[i & 1][j].first, dp[1 - i & 1][j].first); ~~^~~ main.cpp:29:40: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses] if (dp[i & 1][j].first == dp[1 - i & 1][j - 1].first + 2) ~~^~~ main.cpp:30:38: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses] dp[i & 1][j].second = dp[1 - i & 1][j - 1].second; ~~^~~ main.cpp:31:40: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses] if (dp[i & 1][j].first == dp[1 - i & 1][j].first) ~~^~~ main.cpp:32:39: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses] dp[i & 1][j].second += dp[1 - i & 1][j].second; ~~^~~ main.cpp:38:40: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses] if (dp[i & 1][j].first == dp[1 - i & 1][j].first) ~~^~~ main.cpp:39:39: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses] dp[i & 1][j].second += dp[1 - i & 1][j].second; ~~^~~ main.cpp:42:40: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses] if (dp[i & 1][j].first == dp[1 - i & 1][j - 1].first) ~~^~~ main.cpp:43:39: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses] dp[i & 1][j].second -= dp[1 - i & 1][j - 1].second - mod; ~~^~~