View Compilation Error

0_0_3349869_12626.c:1:20: algorithm: No such file or directory
0_0_3349869_12626.c:2: error: syntax error before "namespace"
0_0_3349869_12626.c: In function `main':
0_0_3349869_12626.c:6: error: `__int64' undeclared (first use in this function)
0_0_3349869_12626.c:6: error: (Each undeclared identifier is reported only once
0_0_3349869_12626.c:6: error: for each function it appears in.)
0_0_3349869_12626.c:6: error: syntax error before "a"
0_0_3349869_12626.c:7: error: `a' undeclared (first use in this function)