UVa 12403 - Save Setu (straightforward)

Link: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=279&page=show_problem&problem=3834
Sol:

#include <cstdio>
	#include <cstring>
	using namespace std;
	int main() {
	int tc, x;
	long long sum = 0;
	char s[20];
	scanf("%d", &tc);
	while (tc--) {
	scanf("%s", s);
	if (strcmp(s, "donate") == 0) {
	scanf("%d", &x);
	sum += x;
	} else {
	printf("%lld\n", sum);
	}
	}
	return 0;
	}