11 lines
271 B
C
11 lines
271 B
C
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#include <stdio.h>
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#include <stdlib.h>
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int main(int argc, char* argv[]) {
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double n = 100.0;
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double squareOfSumOfN = 0.25*n*n*(n+1)*(n+1);
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double sumOfSquareOfN = n*(n+1)*(2*n+1)/6;
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printf("%d\n", (long)(squareOfSumOfN - sumOfSquareOfN));
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return 0;
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}
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