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#include <objc/Object.h>
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int main(int argc, char ** argv) {
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int i, last, current, sum, tmp;
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sum = 0;
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last = 0;
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for(current = 1; current < 4000000; tmp = current, current = last + current, last = tmp) {
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if ( current % 2 == 0)
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sum += current;
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}
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printf("%d\n", sum);
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}
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