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- #include <iostream>
- #include <vector>
- using namespace std;
- \*
- INPUT:
- 6
- 1 7
- 7 14
- 28 3
- 5 9
- 4 3
- 2 2
- Output:
- 22
- *\
- int main(){
- vector<int> sym(7, 0);
- int n;
- cin>>n;
- for(int i=0;i<n;i++){
- int a, b;
- cin>>a>>b;
- vector<int> check(7, 0x7FFFFFFF);
- for(int j=0;j<7;j++){
- if(sym[j]==0 && i>0){
- continue;
- }
- check[(sym[j]+a)%7]=min(check[(sym[j]+a)%7], sym[j]+a);
- check[(sym[j]+b)%7]=min(check[(sym[j]+b)%7], sym[j]+b);
- }
- for(int j=0;j<7;j++){
- if(check[j]!=0x7FFFFFFF){
- sym[j]=check[j];
- }
- else{
- sym[j]=0;
- }
- }
- }
- int mini=0x7FFFFFFF;
- for(int i=1;i<7;i++){
- if(sym[i]!=0 && sym[i]<mini){
- mini=sym[i];
- }
- }
- if(mini==0x7FFFFFFF){
- cout<<0;
- }
- else{
- cout<<mini;
- }
- }
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