0_0_32061135_6312.cpp: In function 'void Add(int, int)': 0_0_32061135_6312.cpp:21:17: error: 'n' was not declared in this scope while (x <= n) { ^ 0_0_32061135_6312.cpp:22:9: error: 's' was not declared in this scope s[x] += v; ^