16 lines
337 B
C
16 lines
337 B
C
#include <stdio.h>
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int main()
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{
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int a1,a2,b1,b2;
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int overlaps = 0;
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while (scanf("%d-%d,%d-%d", &a1, &a2, &b1, &b2) != EOF)
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{
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// printf("%d-%d,%d-%d", a1, a2, b1, b2);
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if ( ((a1 >= b1) && (a2 <= b2)) || ((b1 >= a1) && (b2 <= a2))) {
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overlaps++;
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}
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}
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printf("%d\n", overlaps);
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}
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