22 lines
318 B
C
22 lines
318 B
C
#include <stdio.h>
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int main(){
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int c, result;
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int value = 0;
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int vxod[999];
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int a = 0;
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for(int i = 0; i < 4; i++){
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c = scanf("%d",&value);;
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vxod[i] = c;
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a = i;
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}
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value = 0;
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result = vxod[0];
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do{
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result = result * vxod[value] + 1;
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value++;
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}while(value < a);
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printf("%d\n", result);
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return 0;
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}
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