#include <stdio.h>
int main(void) {
int so_dien, gia_dien, gia_banh, tong_tien;
if (so_dien < 400) {
gia_dien = 2.834;
}
else if (so_dien <= 300) {
gia_dien = 2.536;
}
else if (so_dien <= 200) {
gia_dien = 2.014;
}
else if (so_dien <= 100) {
gia_dien = 1.734;
}
else if (so_dien > 0 && so_dien <= 50) {
gia_dien = 1.678;
}
else {
gia_dien = 2.927;
}
tong_tien = so_dien * gia_dien;
printf("Gia dien: %.d\n", gia_dien
); printf("Tong tien phai tra: %d\n", tong_tien
);
return 0;
}
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