View Compilation Error

0_0_9155423_8526.cpp: In function `void solve(int)':
0_0_9155423_8526.cpp:3: error: `i' undeclared (first use this function)
0_0_9155423_8526.cpp:3: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_9155423_8526.cpp:3: error: `REP' undeclared (first use this function)
0_0_9155423_8526.cpp:3: error: expected `;' before "G"
0_0_9155423_8526.cpp:4: error: `FF' undeclared (first use this function)
0_0_9155423_8526.cpp:4: error: expected `;' before "FF"
0_0_9155423_8526.cpp:7: error: `find_scc' undeclared (first use this function)
0_0_9155423_8526.cpp:9: error: `vector' undeclared (first use this function)
0_0_9155423_8526.cpp:9: error: expected primary-expression before "int"
0_0_9155423_8526.cpp:9: error: expected `;' before "int"
0_0_9155423_8526.cpp:10: error: `n' undeclared (first use this function)
0_0_9155423_8526.cpp:11: error: expected `;' before '{' token