제출 #235093

#제출 시각아이디문제언어결과실행 시간메모리
235093thtsshz_bgwrswh여행하는 상인 (APIO17_merchant)C++17
0 / 100
137 ms2296 KiB
#pragma GCC optimize("Ofast") #include<stdio.h> #include<vector> #include<algorithm> using namespace std; struct Edge{ long long to,d,p; }; vector<Edge> g[105]; long long n,m,amount,num[105][1005][2],dis[105][105]; bool check(long long v){ long long i,j,k; for(i=1;i<=n;i++) for(j=1;j<=n;j++) dis[i][j]=1000000000000000; //for(i=1;i<=n;i++) // dis[i][i]=0; for(i=1;i<=n;i++) for(auto x:g[i]) dis[i][x.to]=v*x.d-x.p; for(i=1;i<=n;i++) for(j=1;j<=n;j++) for(k=1;k<=n;k++) if(dis[j][k]>dis[j][i]+dis[i][k]) dis[j][k]=dis[j][i]+dis[i][k]; for(i=1;i<=n;i++) if(dis[i][i]<0) return 1; return 0; } int main(){ long long i,j,k,v,w,t; scanf("%lld%lld%lld",&n,&m,&amount); for(i=1;i<=n;i++) for(j=1;j<=n;j++) dis[i][j]=1000000000000000; for(i=1;i<=n;i++) for(j=1;j<=amount;j++) scanf("%lld%lld",&num[i][j][0],&num[i][j][1]);//buy sell for(i=1;i<=n;i++) dis[i][i]=0; for(i=0;i<m;i++){ scanf("%lld%lld%lld",&v,&w,&t); dis[v][w]=min(dis[v][w],t); } for(i=1;i<=n;i++) for(j=1;j<=n;j++) for(k=1;k<=n;k++) if(dis[j][k]>dis[j][i]+dis[i][k]) dis[j][k]=dis[j][i]+dis[i][k]; for(i=1;i<=n;i++){ for(j=1;j<=n;j++){ if(i==j||dis[i][j]==1000000000000000) continue; long long maxv=0; for(k=1;k<=amount;k++){ if(num[i][k][0]==-1||num[j][k][1]==-1) continue; maxv=max(maxv,num[j][k][1]-num[i][k][0]); } g[i].emplace_back((Edge){j,dis[i][j],maxv}); } } long long left=-1,right=1000000005; while(right-left>1){ long long mid=(right+left)>>1; if(check(mid)) left=mid; else right=mid; } printf("%lld\n",left); }

컴파일 시 표준 에러 (stderr) 메시지

merchant.cpp: In function 'int main()':
merchant.cpp:33:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld%lld",&n,&m,&amount);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
merchant.cpp:39:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%lld%lld",&num[i][j][0],&num[i][j][1]);//buy sell
    ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
merchant.cpp:43:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld%lld%lld",&v,&w,&t);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...