0_0_5045479_8684.c:1:19: iostream: No such file or directory
0_0_5045479_8684.c:2: error: syntax error before "namespace"
0_0_5045479_8684.c:3: error: syntax error before "ans"
0_0_5045479_8684.c: In function `main':
0_0_5045479_8684.c:6: error: `__int64' undeclared (first use in this function)
0_0_5045479_8684.c:6: error: (Each undeclared identifier is reported only once
0_0_5045479_8684.c:6: error: for each function it appears in.)
0_0_5045479_8684.c:6: error: syntax error before "n"
0_0_5045479_8684.c:8: error: `k' undeclared (first use in this function)
0_0_5045479_8684.c:10: error: `sum' undeclared (first use in this function)
0_0_5045479_8684.c:13: error: `t' undeclared (first use in this function)
0_0_5045479_8684.c:16: error: `n' undeclared (first use in this function)
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