Submission #101327

#TimeUsernameProblemLanguageResultExecution timeMemory
101327ansol4328Boxes with souvenirs (IOI15_boxes)C++11
Compilation error
0 ms0 KiB
#include<vector> #include<algorithm> using namespace std; long long delivery(int N, int K, int L, int *positions) { long long res=0; vector<int> lst1, lst2; for(int i=0 ; i<N ; i++) { if(positions[i]>L/2) break; lst1.push_back(positions[i]); positions[i]=-1; } for(int i=N-1 ; i>=0 ; i--) { if(positions[i]==-1) break; lst2.push_back(positions[i]); positions[i]=-1; } int idx1=-1, idx2=-1; for(int i=K-1 ; i<lst1.size() ; idx1=i, i+=K) res+=2*lst1[i]; for(int i=K-1 ; i<lst2.size() ; idx2=i, i+=K) res+=2*(L-lst1[i]); int rm1=lst1.size()-idx1-1, rm2=lst2.size()-idx2-1; int v1=0, v2=l, v3=l; if(rm1) v1+=2*lst1[lst1.size()-1]; if(rm2) v1+=2*(L-lst2[lst2.size()-1]); if(rm1+rm2>=K) { int x=rm1+rm2-K; if(x) { v2+=2*(L-lst2[idx2+x]); v3+=2*lst1[idx1+x]; } } res+=min(v1,min(v2,v3)); return res; }

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:23:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=K-1 ; i<lst1.size() ; idx1=i, i+=K) res+=2*lst1[i];
                     ~^~~~~~~~~~~~
boxes.cpp:24:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=K-1 ; i<lst2.size() ; idx2=i, i+=K) res+=2*(L-lst1[i]);
                     ~^~~~~~~~~~~~
boxes.cpp:25:29: warning: conversion to 'int' from 'std::vector<int>::size_type {aka long unsigned int}' may alter its value [-Wconversion]
     int rm1=lst1.size()-idx1-1, rm2=lst2.size()-idx2-1;
             ~~~~~~~~~~~~~~~~^~
boxes.cpp:25:53: warning: conversion to 'int' from 'std::vector<int>::size_type {aka long unsigned int}' may alter its value [-Wconversion]
     int rm1=lst1.size()-idx1-1, rm2=lst2.size()-idx2-1;
                                     ~~~~~~~~~~~~~~~~^~
boxes.cpp:26:18: error: 'l' was not declared in this scope
     int v1=0, v2=l, v3=l;
                  ^
boxes.cpp:35:13: error: 'v3' was not declared in this scope
             v3+=2*lst1[idx1+x];
             ^~
boxes.cpp:35:13: note: suggested alternative: 'v2'
             v3+=2*lst1[idx1+x];
             ^~
             v2
boxes.cpp:38:24: error: 'v3' was not declared in this scope
     res+=min(v1,min(v2,v3));
                        ^~
boxes.cpp:38:24: note: suggested alternative: 'v2'
     res+=min(v1,min(v2,v3));
                        ^~
                        v2