0_0_22942151_4786.cpp: In function 'void del(int, int)':
0_0_22942151_4786.cpp:98:26: error: expected ')' before 'ans'
if (S.count(PII(L, R)) ans += calc(PII(L, R)), S.erase(PII(L, R));
^
0_0_22942151_4786.cpp:107:26: error: expected ')' before 'ans'
if (S.count(PII(L, R)) ans += calc(PII(L, R)), S.erase(PII(L, R));
^
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