0_0_13876508_24245.cpp: In function 'int main()': 0_0_13876508_24245.cpp:33:17: error: redeclaration of 'int t' int s=1,t=0; ^ 0_0_13876508_24245.cpp:28:14: note: 'int t' previously declared here for (int t=1;t<=T;t++) { ^