Compilare: main.cpp: In function 'int main()': main.cpp:19:13: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(d[a[i][2]]>d[a[i][1]]+a[i][3]) ^~ main.cpp:21:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' r++; ^ main.cpp:6:92: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("dijkstra.in","r",stdin),freopen("dijkstra.out","w",stdout),scanf("%d%d",&n,&m); ^ main.cpp:6:92: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] main.cpp:6:92: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] main.cpp:11:51: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&a[i][1],&a[i][2],&a[i][3]); ^