#include<iostream> #include<string> #include<cstring> #include<vector> #include<cstdlib> #include<map> #include<cstdio> #include<cmath> #include<queue> using namespace std; struct node{ int n; int day; node(int a, int b){ n = a; day = b; } bool operator <(const node& p)const{ return day > p.day; } }; char str[50]; int prereq[28]; int total[28]; vector<int>check[27]; vector<int>res; vector<int>edge[28]; priority_queue<node>q; void dfs( int r,int rest){ int minimum,x,j,i,y; vector<int>temp; total[r] = rest - total[r]; for( i = 0; i < edge[r].size(); i++){ x = edge[r][i]; prereq[x]--; if( prereq[x] == 0){ temp.push_back(x); } else{ check[x].push_back(r); } } minimum = total[r]; for( i = 0; i < temp.size(); i++){ x = temp[i]; for( j = 0; j < check[x].size(); j++){ y = check[x][j]; if(total[y] < minimum ){ minimum = total[y]; } } if( total[x] <= minimum ){ dfs(x,minimum); } else{ total[x] = total[x] - minimum; q.push(node(x,total[x])); } } temp.clear(); } int main(){ int ans,t=0,maximum,x,testcase,r,i,j,sum,y; // freopen("output.txt","w",stdout); // freopen("input.txt","r",stdin); scanf("%d",&testcase); gets(str); gets(str); while( testcase-- ){ if( t == 1){ printf("\n"); } t = 1; for( i = 1; i <= 26; i++){ edge[i].clear(); prereq[i] = 0; } while(gets(str)){ r = strlen(str); if( r == 0){ break; } x = str[0]-'A'; x = x + 1; sum = 0; i = 2; while( i < r && str[i] != ' '){ sum = (sum*10) + str[i]-'0'; i++; } total[x] = sum; if( i == r){ q.push(node(x,sum)); } i++; for(; i < r; i++){ y = str[i]-'A'; y++; edge[y].push_back(x); prereq[x]++; } } ans = 0; while(!q.empty()){ maximum = 0; res.clear(); while( !q.empty() ){ node top = q.top(); q.pop(); maximum = top.day; res.push_back(top.n); } ans = ans + maximum; for( i = 1; i <= 26; i++){ check[i].clear(); } for( i = 0; i < res.size(); i++){ x = res[i]; dfs(x,maximum); } } printf("%d\n",ans); } return 0; }
Standard input is empty
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