35 lines
724 B
C++
35 lines
724 B
C++
#include <cstdio>
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int solve( int start , int i) {
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int times = 1,s;
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if(start == 1) times = 15;
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else if(start == 2) times = 150;
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else {
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times = 750;
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start = start - 3;
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while(start--) {
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times *= 10;
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}
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}
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if(start == 2) {
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if( i % 4 == 0)
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s = (i + i/4 - 1)*times;
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else
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s = (i + i/4)*times;
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} else {
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if( i % 9 == 0)
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s = (i + i/9 - 1)*times;
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else
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s = (i + i/9)*times;
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}
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return s;
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}
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int main(void) {
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int T,m,k;
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scanf("%d",&T);
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while(T--) {
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scanf("%d %d",&m,&k);
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printf("%d\n",solve(m,k));
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}
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return 0;
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}
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